Behringer V-Tone Acoustic ADI21

Analog Modeling PreampNow the coveted "unplugged" sound is super-favorable! You want the naturally warm and present sound of tube amplifiers? The ADI21 is an analog modeling preamp / effect pedal with direct recording output for acoustic guitars.

Its ultra-musical 3-band EQ with tune-able mid-range is ideal for simple feedback suppression and control of hard-sounding piezo pickups. A high input impedance ensures maximum signal repetition and dynamics. You can use the ADI21 either as a direct recording preamp with tubes / microphone simulation or as an active standard DI box. The output is designed as a 6.3 mm mono jack and as a balanced gold-plated XLR connector. A ground lift switch prevents problems with ground loops, the power supply is via a 9 volt battery or a DC adapter (not included).

  • Stompbox with DI recording output for acoustic guitars
  • Authentic tube and microphone modeling circuitry provides the natural warmth and presence, removed by microphone acoustic guitar in conjunction with a tube amp
  • Ultra-musical 3-band EQ with swept mids for accurate feedback control and to eliminate the harsh harmonics of piezo pickups
  • Dual DI mode for either direct recording output with tube / microphone simulation or standard active DI box
  • Outputs on 6.3mm TS or balanced, gold-plated XLR connector
  • Ground Lift switch
  • Runs on 9 V battery or DC adapter (not included)

Further Information

Modelling Yes
Incl. Tuner No
Expression Pedal No
Headphone Output No
USB Connection No
MIDI Interface No
Battery Operation Yes
PSU included No

These are other customers' choices:

Customers who looked at this item have bought these:

Behringer V-Tone Acoustic ADI21
77% bought this exact product
Behringer V-Tone Acoustic ADI21
Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
$23.75 Add to Basket
Harley Benton Custom Line Acoustic Preamp
4% bought Harley Benton Custom Line Acoustic Preamp $84
tc electronic BodyRez
3% bought tc electronic BodyRez $89
Zoom A1 Four Acoustic FX Pedal
3% bought Zoom A1 Four Acoustic FX Pedal $128
Nux Stageman Floor Preamp
2% bought Nux Stageman Floor Preamp $107
Our most popular Acoustic Guitar Effects
246 Customer Ratings:
  • 5
  • 4
  • 3
  • 2
  • 1
4 /5
  • handling
  • features
  • sound
  • quality
Total
handling
features
sound
quality
Every acoustic guitarist should have one!
Silvio C., 01.07.2015
This small box fits the space between the acoustic guitar and the PA system, providing additional controls and, most important, an XLR output. The thick brown plastic body and the heavy metallic base give a sense of solidity; the on/off button may seem brittle, but this device is not supposed to be repeatedly engaged and disengaged while playing!

The tone (three bands, plus middle frequency) and volume knobs are integrated by two cursors for ground lift and -20dB level reduction. A "blend" knob is also present, which is actually a volume control for a simulated microphone in front of the guitar's soundhole. The device can be powered by either 9V battery (lasting about four hours) or adapter: because of the internal pre-amplifier, powering via XLR is impossible.

When disengaged, the device works as a passive DI box. Engaging it will activate the internal pre-amplifier, and this might reduce the sound level, as the volume knob is thought to both decrease and increase the volume; as the blend knob also increases the volume of the unit, some careful soundcheck may be required. In either case, the sound is absolutely convincing: however, the device must always be powered, even in passive mode. Some users reported feedback problems when blending with the microphone simulator: but I never had this issue.

Overall, a good tool at a low price, which will rest in the guitar case's pocket, ready to spring into action.
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Total
handling
features
sound
quality
Don't let the price fool you
Fer.ta.h, 12.12.2019
This DI/modeling amp was designed for acoustic guitars with piezo (I believe). I am using it with my Blueridge guitar and with a more traditional magnetic pickup, Fishman Neo-D single coil.
I read many reviews and saw videos of people complaining about ADI21 not being good for the job because it distorts too much.
In my opinion that isn't the case. If you set the input gain levels of your mixer, interface or amp right, you won't be having distortion problems. If that is not enough, you can always flick the very useful PAD switch and lower the output gain of the pedal for 20db. So with a bit of knowledge and patience, this pedal can really work great and do the job that it was intended to do; make your amplified acoustic guitar sound richer with the feeling of using a mic and an amp.
The fact that you can choose a mid-range frequency and either cut it or boost it, makes it even more functional since you can not only shape your tone in more detail, but also eliminate possible feedback problems.
The housing is plastic, but it feels more solid than other Behringer pedals. When the pedal is bypassed, it acts as a simple DI.
And it's 21€!!!
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Total
handling
features
sound
quality
A very affordable preamp for gigging
26.09.2014
Let me start by saying that this is definitely not a Baggs PADI. Let me also say that it costs about 1/10 of the PADI's price. Generally speaking it will tame the "quack" associated with USTs (under-saddle transducers). The sweepable mids are a great feature especially considering the price and besides EQing that control can also be used to kill any feedback that you might be getting. The blend knob should be used with caution as a little goes a long way and you can easily get valve-like distortion out of it (useful for electric guitar though). Overall a nice product for the price, make sure you invest in an AC adapter as it can't be powered by phantom power and it can eat through batteries relatively easy. A plus is that it can double as an active DI box.
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Total
handling
features
sound
quality
Ok, Worth the money
Pub Man, 08.08.2020
But if you got a few bob to spend get something better.
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
$23.65 €20.17
The shipping costs are calculated on the checkout page.

The price in USD is a guideline price only!

Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
Share This Product
Your Contacts
Phone: +49-9546-9223-20
FAX: +49-9546-9223-24
Offers include VAT and are valid as long as stocks last. We do not accept liability for typographical errors or inaccurate information of any kind. *RRP = manufacturer's / distributor's recommended retail price in Germany
(4)
Recently Viewed
Behringer 140 Dual Envelope/LFO

Behringer 140 Dual Envelope/LFO; Eurorack module; two independent analog ADSR envelope generators; for each envelope: manual trigger button, Gate input, sliders for Attack, Decay, Sustain and Release, 2 signal outputs and inverted output; analog LFO with 5 waveforms; sliders for...

Recently Viewed
Novation Launchkey 49 MK3

USB MIDI kKeyboard 49 Velocity sensitive keys, 16 RGB illuminated velocity sensitive pads, Scale and chord mode, Arpeggiator, Capture MIDI function, MIDI mappings, Device lock, Pitch bend and modulation wheel, 2 x 16 Character display, 8 Controls, Keys for...

Recently Viewed
Stairville LED Vintage Bowl 50 RGBA

Stairville LED Vintage Bowl 50 RGBA DMX, 60 W LED, 50 cm; decoration element for stages, clubs and events; stable metal construction; illuminated reflector with unique look; technical data: Light source: 60 Watt RGBA 4in1 LED; Control: DMX (4/6/8 channels),...

(2)
Recently Viewed
Harley Benton Dullahan-FT 24 BKS

Headless Electric Guitar Ergonomically shaped alto body, Maple neck, Bolt-on neck attachment, Maple fretboard, Black offset dots fretboard inlays, Modern C neck profile, Fretboard radius: 350 mm (13.78"), Scale: 648 mm (25.51"), Nut width: 42 mm (1.65"), Graph Tech...

Recently Viewed
Thomann FetAmp

Thomann FetAmp - in-line microphone preamplifier, ultra low noise class A JFet amplifier, for ribbon & dynamic microphones, 2 matched JFet transistor pairs, Input : XLR 3 pol female (balanced), Output: XLR 3 pol male (balanced), Input impedance: 20 kOhm,...

(1)
Recently Viewed
Presonus Studio One 5 Pro UG 1-4 Pro

Presonus Studio One 5 Professional Upgrade 1-4 Professional / Producer (ESD); Audio MIDI Sequencer (DAW); upgrades Studio One 1-4 Professional / Producer to Studio One 5 Professional; straightforward single window operation; straight drag and drop functionality; project page allows for...

Recently Viewed
Blue Spark Blackout SL

Large Diaphragm Condenser Microphone Polar pattern: Cardioid, Frequency response: 20 - 20000 Hz, Sensitivity: 34.9 mV / Pa at 1 kHz (1 pa = 94 dB SPL), Output impedance: 50 ohms, Max. sound pressure level: 136 dB SPL (1k...

(1)
Recently Viewed
Electro Harmonix Oceans 12 Reverb

Electro Harmonix Oceans 12 Reverb; Effects Pedal for Electric Guitar & Bass; Based on the Oceans 11 with even more reverbs and functionality; two simultaneous, independent, stereo reverb engines; 24 Presets and advanced I/O allowing for stereo in/out or mono...

(1)
Recently Viewed
Ibanez TMB100-TFB Talman Bass

Electric Bass Body: Poplar, Bolt-on neck: Maple, Fretboard: Jatoba, White dot fretboard inlays, Neck profile: TMB4, Scale: 864 mm (34.02"), Fretboard radius: 240 mm (9.45"), Nut width: 41 mm (1.61"), Plastic nut, 20 Medium frets, Pickups: Dynamix J Single...

(3)
Recently Viewed
Behringer 150 Ring Mod/Noise/S&H/LFO

Behringer 150 Ring Mod/Noise/S&H/LFO; Eurorack module; analog Ring Modulator; Noise Generator with two outputs for white noise and pink noise; Sample & Hold section with Clock Out, External Clock In and sliders for Clock Rate and Lag Time; analog LFO...

(1)
Recently Viewed
Novation Launchkey 37 MK3

USB MIDI Keyboard 37 Velocity sensitive keys, 16 RGB illuminated velocity sensitive pads, Scale and chord mode, Arpeggiator, Capture MIDI function, MIDI mappings, Device lock, Pitch bend and modulation wheel, 2 x 16 Character display, 8 Controllers, Keys for...

(2)
Recently Viewed
Harley Benton Dullahan-AT 24 TBK

Headless Electric Guitar Ergonomically shaped alto body, Maple neck, Bolt-on neck attachment, Maple fretboard, Black offset dots fretboard inlays, Modern C neck profile, Fretboard radius: 350 mm (13.78"), Scale: 648 mm (25.51"), Nut width: 42 mm (1.65"), Graph Tech...

Give Feedback
Feedback Found an error or want to give us feedback about this page?

We're looking forward to hearing from you and aim to solve any problems as soon as we can.