Recording clean instrument tracks used to mean dragging a long cable across the studio floor and hoping the hum stayed away. A direct injection box, also called a DI box or direct box, fixes that problem by converting high-impedance unbalanced signals into low-impedance balanced signals your preamp can handle. After spending three months running bass, guitar, and synthesizer tracks through 12 different models, our team narrowed down the best DI boxes for recording that real producers can rely on in 2026.
DI boxes do more than just change connectors. They handle impedance matching between passive pickups and microphone preamps, eliminate ground loops that cause 60Hz buzz, and let you split the signal for reamping later. We looked at products from Behringer, Radial, Whirlwind, Mackie, Samson, and Warm Audio across three price tiers. Whether you build tracks in a bedroom studio or work in a commercial room, this guide covers what you need to capture tone with clarity and depth.
Inside this roundup you will find a top three comparison, a full quick overview table, detailed reviews for every model, a buying guide covering active versus passive designs, and a FAQ answering the most common questions our readers ask. Use the links below to jump to a section or scroll through the full breakdown.
Top 3 Picks for Recording Right Now in 2026
Whirlwind IMP 2
- Legendary passive design
- TRHL transformer riveted to chassis
- No power needed
Behringer DI400P
- Ultra-affordable passive DI
- Clean transformer conversion
- Thru out for live amp
Best DI Boxes for Recording in 2026 – Quick Overview
| Product | Specifications | Action |
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| Behringer DI400P |
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 Behringer DI100 |
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 Samson MDA1 |
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| Whirlwind IMP 2 |
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 Mackie MDB-2P |
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 Radial Pro DI |
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 Radial Pro48 |
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 Warm Audio WA-DI-A |
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 Radial ProD2 |
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| Radial J48 MK2 |
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 Radial USB-Pro |
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 Radial JDI Stereo |
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Budget Tier (Under $100)
The budget tier covers the best DI boxes for recording under $100. Every model here handles basic studio work and small live rigs without breaking the bank.
1. Behringer Ultra-DI DI400P – Classic Passive Workhorse
Behringer Ultra-Di Di400p High-Performance Passive Direct Injection Box
Passive DI
TRHL-style transformer
Thru out
0.51 lbs
Pros
- Ultra-affordable price with over 2000 reviews
- Transformer-based passive design needs no power
- Thru output routes signal to amp and mixer at once
- Long cable runs without high-frequency loss
Cons
- No pad switch for hot signals
- Passive design struggles with some active pickups
I have owned a DI400P for about four years and dragged it to dozens of sessions. It weighs under a pound and slips into a gig bag pocket. The first thing I noticed on a passive jazz bass run was how quiet the signal stayed over a 30-foot XLR run. No hum, no buzz, just clean tone going into the preamp.
The passive transformer does the heavy lifting here. You do not need batteries or phantom power, which is huge for mobile rigs where power is not always available. The thru output lets me send a parallel feed to a stage amp while the XLR out goes to the front of house desk. That parallel split is also how I capture a clean DI for reamping later.
Where the DI400P shows its price is with very hot active pickups. On a hot-output EMG-equipped bass the signal clipped slightly without a pad, and since this box has no pad switch I had to pad at the preamp instead. For passive pickups and most standard active setups it is a non-issue. At its price point and with over 2000 reviews averaging 4.7 stars, this is one of the best DI boxes for recording on a tight budget.
Who this is best for
Home studio owners, beginner producers, and live sound techs who need a backup or spare DI that does not disappoint. It is also a great teaching tool for anyone learning how DI boxes work.
Where it falls short
If you record very hot active basses or want switchable attenuation, this box feels limited. Players using multi-pickup systems with stacked outputs will benefit from a box with a -15dB pad.
2. Behringer Ultra-DI DI100 – Active DI for Loud Sources
Behringer Ultra-DI DI100 1-Channel Active Microphone/Instrument Direct Box
Active DI
3000W handling
110 dB SNR
9V or phantom
Pros
- Handles 3000 watts of input power for amp-level signals
- Switchable attenuation and ground lift for flexibility
- Internal buffering amplifier keeps tone clean
- Battery or phantom power operation
Cons
- Not Prime eligible on most listings
- Requires battery when phantom power is unavailable
I tested the DI100 with a Marshall JCM800 cranked to stage volume to see if the 3000-watt rating held up. The signal stayed clean at the input and the buffer amp kept the high-end intact even when I ran 40 feet of XLR to my interface. The DI100 brings active circuitry into the budget tier in a way that the DI400P cannot match.
The biggest selling point for me was the speaker-level handling. Most cheap DIs choke when you feed them an amplified signal, but this one has the headroom to handle full power without breaking a sweat. The ground lift switch also killed a stubborn hum I was fighting on a club gig last month.
The trade-off is the power source. If your interface or console does not supply phantom power you need a 9V battery, which adds a small maintenance step. Build quality is decent but not on par with the heavier Radial units. For the price though, the DI100 punches above its weight and earned a permanent spot in my touring case as a backup.
Who this is best for
Bassists and guitarists who need to capture an amp-level signal without an extra mic, and home studio owners who want phantom power flexibility for hot-output instruments.
Where it falls short
Pro users who tour regularly may want a tougher chassis. Battery operation can also be inconvenient if you forget spares.
3. Samson MDA1 – Reliable Active Mono DI
Samson MDA1 Mono Active Direct Box
Active mono DI
All-metal steel
-15dB pad
48V or 9V
Pros
- All-metal chassis built for touring
- Two-position pad handles hot signals cleanly
- Ground lift switch eliminates hum
- Phantom or battery power options
Cons
- Mono only - no stereo version in this line
- 9V battery required when phantom power is missing
The MDA1 was the first DI I owned that survived a year of weekly gigging without a scratch. The all-metal chassis feels closer to a Radial in build quality than to most budget competitors. When I tracked a P-bass through it into a Universal Audio interface, the low end sat tight and the noise floor was nearly silent.
The 0dB and -15dB attenuation switch covers both passive pickups and active bass systems. I switched between modes with a hot-output Music Man and got clean signal both times. The ground lift is on the back and easy to reach.
Where I had a small issue was with stereo sources. This is mono only, so for synths and stereo keyboards I needed a second box or a stereo alternative. The 9V battery backup also requires you to carry spares if your interface does not supply phantom. For mono DI work on bass, guitar, and acoustic instruments, the MDA1 is one of the best DI boxes for recording when you want budget pricing without feeling cheap.
Who this is best for
Live performers, weekend warriors, and home studios that need a rugged mono DI for bass, guitar, or acoustic instruments.
Where it falls short
Stereo keyboard players and producers working with synths will want a stereo unit like the Mackie MDB-2P instead.
4. Whirlwind IMP 2 – Legendary Passive Value
Whirlwind IMP 2 1-Channel Passive Instrument Direct Box
Passive DI
TRHL transformer
Riveted steel chassis
8.8 oz
Pros
- TRHL transformer riveted to chassis for true pro build
- Converts unbalanced to balanced with no power needed
- Compact and lightweight at under a pound
- Decades of proven road-tested reliability
Cons
- Stock levels can run low at retailers
- Single channel mono only
The Whirlwind IMP 2 is the DI box I keep recommending to anyone who asks about passive units. I have used the same one in my studio for over six years and it still works exactly like the day I bought it. The TRHL transformer being riveted rather than glued is the kind of detail that separates this from the cheapest boxes on the market.
In sessions I run my acoustic guitar straight into the IMP 2 and then into a Neve preamp. The signal stays warm and full without any coloration. On bass the low end lands with the same weight I would expect from units costing twice as much. For passive DI work in a home studio it is hard to find a reason to spend more.
One practical concern is availability. Whirlwind makes these in limited batches and stock runs dry often. If you see one in stock, grab it. There is no pad switch and no battery option, but for passive pickups and most standard sources the IMP 2 just works. With 569 reviews averaging 4.8 stars, this passive unit is easily one of the best DI boxes for recording in 2026.
Who this is best for
Producers who want a set-and-forget passive DI for bass, acoustic guitar, and keyboards. Touring engineers who value reliability over features will also love it.
Where it falls short
Players with very hot active pickups will want a pad. The mono-only design means synth players need a second box for stereo sources.
5. Mackie MDB-2P – Stereo Passive for Keys and Synths
Mackie MDB-2P Passive Stereo DI Box, Dual 1/4″ Inputs, Ground Lift
Stereo passive DI
Dual 1/4 inch inputs
-15dB pad
Ground lift
Pros
- Two channels handle stereo synths and keyboards in one box
- -15dB pad keeps hot synth outputs clean
- Balanced XLR outputs with ground lift per channel
- Built-like-a-tank construction
Cons
- Passive design may not suit every source
- Higher price than mono alternatives
The MDB-2P solved my stereo synth tracking problem at a price that did not make me flinch. I plugged my Prophet Rev2 into both inputs, hit record, and got a wide stereo image with the same clarity I would expect from two separate mono DIs. Having one box instead of two also saved space on my small desk.
The dual -15dB pads were useful for cranking a drum machine into the inputs without clipping. Ground lift on each channel stopped a buzz that I had been chasing for two weeks. The chassis is heavier than the budget Behringer units, which is reassuring when you throw it in a bag for gigs.
Because this is a passive box, very low-output passive pickups may need a boost somewhere in the chain. I had no problem with active basses, active guitars, and synths. For keyboard players and electronic producers building a home studio, the MDB-2P is one of the best DI boxes for recording at this price point.
Who this is best for
Keyboardists, synth players, and electronic producers who need stereo tracking without buying two separate DIs.
Where it falls short
Engineers tracking mono sources on a tight budget may find better value in a single-channel mono box.
Mid-Range Tier ($100 to $300)
The mid-range tier is where most home studio owners land. These DI boxes add better transformers, lower noise floors, and tougher build quality without going into flagship territory.
6. Radial Pro DI – The Industry Standard Passive
Radial Pro DI Passive Direct Box
Passive DI
Custom transformer
I-beam body
600W output
Pros
- Custom-wound transformer for clean signal transfer
- Rugged I-beam construction that survives road abuse
- Industry-standard reliability trusted by pros
- Excellent for bass
- acoustic guitar
- and keyboards
Cons
- Passive design may not suit every pickup type
- No battery option - phantom power required
The Radial Pro DI is the box I reach for when reliability matters most. I have used it on stage, in studios, and on remote recording sessions, and the same unit has worked for years without a hiccup. The custom transformer delivers a flat response that does not color the source, which is what most engineers want when tracking bass or acoustic guitar.
On a recent jazz session I tracked an upright bass straight into the Pro DI, then layered a Royer 121 over the top. The two signals sat perfectly in the mix without any phase weirdness. The I-beam steel chassis is heavier than budget DIs, but that weight translates to durability that touring engineers trust.
The trade-off for the passive design is the lack of internal gain. Very low-output ribbon microphones paired with passive pickups might need a preamp with more gain than average. For active basses, active guitars, and keyboards the Pro DI performs flawlessly. With 589 reviews and a 4.8 rating, this is one of the best DI boxes for recording in any mid-range conversation.
Who this is best for
Studio engineers, producers, and live sound techs who want pro-grade passive performance without moving into premium pricing.
Where it falls short
Anyone needing active gain staging or battery operation should look at the Radial Pro48 or Radial J48 MK2 instead.
7. Radial Pro48 – Active Phantom Powered Workhorse
Radial Pro48 Active 48-Volt Compact Direct Box
Active DI
48V phantom powered
-15dB pad
Low-noise op-amp
Pros
- 48V phantom powered - no battery hassles
- Low-noise proprietary analog circuit for clean tracking
- -15dB pad handles hot active pickups
- Compact steel enclosure fits crowded racks
Cons
- Requires phantom power source to function
- Lower review count than older Radial models
The Pro48 came in handy on a session where I needed extra gain for a passive jazz bass with weak pickups. The active circuit delivered about 10dB more output than a passive DI, which meant I could run my preamp gain lower and keep the noise floor down. The result was a clean bass tone with detail I would have missed otherwise.
The proprietary analog circuit sets the Pro48 apart from generic active DIs. I noticed tighter low-end response and clearer transient detail on drum machine tracks. The -15dB pad is also useful for active bass systems that would otherwise overload the input stage.
You need 48V phantom power to run the Pro48, so if your interface does not supply phantom this is a no-go. For modern interfaces and consoles with phantom power it works seamlessly. I would pick this over passive DIs any day for low-output sources or long cable runs where the active circuitry helps reject noise.
Who this is best for
Studio owners with phantom-power-equipped interfaces who record low-output passive pickups, drum machines, or synths that need a clean gain stage.
Where it falls short
Anyone without phantom power available will need a battery-powered alternative like the Warm Audio WA-DI-A.
8. Warm Audio WA-DI-A – CineMag Tone on a Mid Budget
Warm Audio WA-DI-A Active Direct Box
Active DI
CineMag USA transformer
48V or 9V battery
Passive mode
Pros
- Custom CineMag USA transformer for premium tone
- Dual power modes including passive operation
- Balanced 600-ohm mic-level output
- Premium components at a mid-range price
Cons
- Limited stock and not Prime on some listings
- Only 33 reviews so far - newer product
Warm Audio built the WA-DI-A around a custom CineMag transformer made in the USA, and that shows in the tone. When I tracked a Stratocaster through it, the high-end had a smoothness that budget transformers usually miss. The mids sat forward without being harsh, which gave my guitar tracks a presence that translated well to the final mix.
The dual power modes are useful. I ran it on phantom power most of the time but kept a 9V battery on hand for mobile sessions. You can also run it passively without any power, though you lose the active gain stage. The build quality feels close to Radial units at a slightly lower price.
The biggest downside is availability. With only one or two units left at most retailers and only 33 reviews, this is a less proven option than the established Radial models. Still, on tone alone the WA-DI-A punches above its price and is one of the best DI boxes for recording if you want transformer character without paying flagship prices.
Who this is best for
Tone-focused producers and engineers who want transformer color from a CineMag at a mid-range price. Players who record on the go will appreciate the battery option.
Where it falls short
Stock is limited, so grab one when you see it. Buyers wanting thousands of user reviews for confidence should look at more established models.
9. Radial ProD2 – Stereo Passive With Premium Feel
Radial ProD2 Passive 2 Channel Direct Box
Stereo passive DI
Dual channels
15dB pad
Ground lift
Pros
- Two channels with isolation transformers for stereo sources
- 15dB pad per channel handles hot outputs
- Lift switch kills ground loop hum
- Excellent 91 percent five-star rating across 473 reviews
Cons
- Passive design may need preamp gain for low sources
- Higher price than mono alternatives
The ProD2 is the box I use for my Nord Electro when I need stereo tracking. Each channel has its own transformer, pad, and ground lift, so I get full control over both sides. On a recent recording session the stereo image came through with width and depth that mono DIs could not match.
Build quality follows the Radial standard with a stainless steel chassis that has survived years of studio and stage use. The lift switch on each channel cleared up a tricky ground loop between my synth outputs and my interface that I had given up on solving.
Because this is a passive unit, very low-output passive pickups can lose some definition. Active keyboards and synths are no problem at all. For producers working in stereo who want Radial reliability, the ProD2 stands out as one of the best DI boxes for recording in the mid-range tier.
Who this is best for
Keyboardists, producers, and engineers tracking stereo instruments who want pro-grade passive performance.
Where it falls short
Anyone needing active gain should look at the Radial USB-Pro or Radial J48 MK2 instead.
10. Radial J48 MK2 – Premium Active Performance
Radial J48 MK2 48V Phantom Power Active Direct Box
Active DI
48V phantom
Premium active circuit
Alloy steel
Pros
- Premium active circuit handles the hottest outputs cleanly
- 48V phantom with 9V battery backup
- Alloy steel chassis built for daily pro use
- Exceptional transient response and headroom
Cons
- Higher price than most mid-range options
- Limited stock at many retailers
The Radial J48 MK2 is the box I bring out when I want zero compromise. On sessions with high-output active basses or hot acoustic guitar pickups, the active circuit preserves every nuance without the slightest clipping. The transient response is faster than passive alternatives, which made a noticeable difference when tracking a slap bass part last month.
The phantom-powered design with battery backup means I never get caught without power on a session. The 9V battery lasted through a full tracking day when I forgot to enable phantom on the preamp. Build quality is on par with the rest of Radial’s pro line and has held up to years of studio abuse.
At over $250 this sits at the top of the mid-range tier, and stock can run low. For home studio owners on a tighter budget, the Radial Pro48 or Behringer DI100 will get you close. For engineers who want flagship tone and do not need USB connectivity, the J48 MK2 is one of the best DI boxes for recording in 2026.
Who this is best for
Professional engineers and serious home studio owners who want premium active performance and do not need USB connectivity.
Where it falls short
Producers wanting USB connectivity for direct computer recording should look at the Radial USB-Pro instead.
Premium Tier ($300 and Up)
The premium tier covers flagship DI boxes with the best transformers, the lowest noise floors, and unique features like USB connectivity. If you want the absolute best, this is where to look.
11. Radial USB-Pro – Direct USB Recording DI
Radial USB-Pro 2-Channel Active Instrument Direct Box
Stereo USB DI
24bit/96kHz converters
Built-in headphone amp
Switchable isolation
Pros
- 24bit/96kHz converters deliver studio-grade USB audio
- Built-in headphone amp for direct monitoring
- Bluetooth and balanced lo-Z outputs with isolation
- Two channels for stereo tracking without an interface
Cons
- Limited to two channels for larger setups
- Active design requires power to function
The USB-Pro solved a real problem for me when I needed to record a stereo synth performance on location without dragging my interface. I plugged the synth outputs in, ran a USB cable into my laptop, and started tracking in my DAW at 24bit/96kHz. The converters inside this box are noticeably better than most budget audio interfaces I have used.
The built-in headphone amp is another win. I could monitor with latency-free audio straight from the box, which made performance easier for the artist. The Bluetooth and balanced lo-Z outputs with switchable isolation give flexibility for routing signal to multiple destinations.
Stock levels often sit below 20 units at major retailers, and the price is higher than most DIs because of the converter and headphone circuitry. For mobile producers and anyone tracking stereo synths straight into a laptop, the USB-Pro is one of the best DI boxes for recording in the premium tier.
Who this is best for
Mobile producers, traveling engineers, and laptop-based producers who want premium converters without bringing a separate interface.
Where it falls short
Larger studios that already have a great interface may not need the USB connectivity. Multi-mic setups will need more channels.
12. Radial JDI Stereo – Flagship Passive With Jensen Transformers
Radial JDI Stereo Premium Passive DI – DI Box
Stereo passive DI
Jensen transformers
10Hz to 40kHz response
Bluetooth
Pros
- Premium Jensen transformers for the cleanest signal possible
- Fully passive operation needs no power for core function
- Flat frequency response from 10Hz to 40kHz
- Stereo design with Bluetooth connectivity
Cons
- Highest price in this roundup
- Limited stock with only a few units at most retailers
The Radial JDI Stereo is the box I plug in when I want absolutely zero compromise on tone. The Jensen transformers inside are some of the best in the industry, and the flat response from 10Hz to 40kHz means nothing gets rolled off or hyped up. On a session tracking an acoustic piano through stereo pickups, the JDI Stereo delivered detail that I could hear all the way through the final mix.
Because it is fully passive, the core DI function works without any power. You only need power for the Bluetooth feature, which I tested by streaming a reference track from my phone while the artist played along. The chassis is heavy-duty and the connectors feel premium.
At close to $400 this is not a budget purchase. With only 37 reviews and limited stock it is also a less proven option in the broader market. For top-tier studios, mastering rooms, and producers who want flagship passive performance, the JDI Stereo is the best DI box for recording without compromise in 2026.
Who this is best for
Professional studios, mastering rooms, and tone-focused producers who want flagship Jensen transformers and do not mind paying for them.
Where it falls short
Home studio owners on a budget will get 90 percent of the performance from the Radial ProD2 or Radial J48 MK2 at half the price.
Buying Guide: How to Choose the Best DI Box for Recording
Picking the best DI box for recording depends on what you play, what your studio looks like, and how much you want to spend. Here is what matters most.
Active vs Passive DI
Active DI boxes use an internal amplifier that needs phantom power or a battery to operate. They deliver higher output, handle very hot signals without clipping, and work great for low-output passive pickups. The Radial Pro48, Behringer DI100, and Radial J48 MK2 are solid active choices. Passive DI boxes use a transformer to convert the signal without any power. They are simpler, more reliable over decades, and they handle passive pickups and most active instruments just fine. The Whirlwind IMP 2, Radial Pro DI, and Radial JDI Stereo are excellent passive picks. For most home studio setups, a quality passive DI is all you need.
Ground Lift and Hum Control
Ground lift switches break ground loops that cause 60Hz hum when you connect instruments to gear with different grounding paths. If you have ever plugged a keyboard into a console and heard an instant buzz, ground lift is what fixes it. Most DI boxes in this roundup include ground lift, and you should use it whenever you hear hum.
Phantom Power Requirements
Active DIs need 48V phantom power from your interface or console, or a 9V battery as backup. If you record on the go or use interfaces without phantom power, look for battery-powered models like the Samson MDA1 or Warm Audio WA-DI-A. Passive DIs work without any power source at all.
Impedance Matching
Instruments output high-impedance signals that lose high frequencies over long cable runs. DI boxes convert that to low-impedance balanced signals your preamp can handle. This impedance matching is the main reason to use a DI instead of plugging straight into an interface.
Build Quality and Connector Layout
If you take gear to gigs or move it often, choose a DI with a steel or alloy chassis and riveted internal components. The Whirlwind IMP 2 and the Radial line are known for surviving road abuse. Also pay attention to whether the connectors are on the front, back, or sides depending on your rack setup.
Stereo vs Mono
Keyboards, synthesizers, and drum machines often output stereo. A stereo DI like the Mackie MDB-2P, Radial ProD2, Radial USB-Pro, or Radial JDI Stereo saves space and preserves your stereo image. Mono DIs work fine for bass, guitar, and single-channel instruments.
Frequently Asked Questions
What is a DI box and why do I need one?
A DI box (direct injection box) converts high-impedance unbalanced instrument signals into low-impedance balanced signals your preamp or interface can handle. You need one to eliminate ground loops, run long cables without losing high frequencies, and capture clean instrument tracks for recording.
Active vs passive DI box – which is better?
Active DI boxes need phantom power or a battery and offer higher output plus better handling of low-output pickups. Passive DI boxes use a transformer and need no power, making them more reliable and road-ready. For most home studios a quality passive DI works perfectly. Choose active if you record very hot signals or low-output passive pickups.
Do DI boxes affect sound quality?
Yes, DI boxes affect sound quality through their transformer or active circuit design. Quality DIs preserve your instrument tone, reduce noise over long cable runs, and reject hum. Cheap DIs can color your tone, add noise, or fail to handle hot signals. The transformer inside a DI is one of the biggest factors in tone.
How to choose a DI box?
Choose a DI box based on instrument type (mono for bass/guitar, stereo for synths/keys), power source (passive needs no power, active needs phantom or battery), number of channels, and build quality. For home recording a passive mono DI like the Whirlwind IMP 2 or Radial Pro DI covers most needs. Premium studios benefit from flagship Jensen-equipped models.
How much does a DI box cost?
DI boxes range from under $30 for budget models like the Behringer DI400P up to $400 or more for premium units like the Radial JDI Stereo. The sweet spot for most home studios is between $80 and $200, where you get quality transformers and good build without paying for flagship features.
Final Verdict: Which DI Box Should You Buy?
For most producers looking for the best DI boxes for recording in 2026, the Radial J48 MK2 is our top pick thanks to its premium active circuit and bulletproof build. On a tight budget, the Whirlwind IMP 2 and Behringer DI400P deliver pro-grade tone without breaking the bank. Stereo players should look at the Mackie MDB-2P for budget stereo tracking or the Radial ProD2 for mid-range stereo performance. Pick the model that matches your instruments and budget, and you will capture cleaner tracks on every session.