What is the correct psu values for this? I have a 9V 500ma supply will that work?

9v power supply will do the trick. The unit draws only 25-35 milliamps so your supply will be big enough. I think it needs to be centre positive. If you plug in and it doesn't work you might have to cut the wires on the power supply and rejoin them back to front. A regular 9v battery should last you around 10-12 hours with continuous use.

Does anyone use this with a tube amp?

I use mine with a Marshall acoustic amp and it is a good preamp and eq for electro/ acc guitars

I have a Taylor with magnetic pickup going through a Fishman Loudbox Mini. I need more volume without feedback. Will this work?

It will provide more volume and can be adjusted for EQ, so you should be able to roll back any frequency that is feeding back. I do find the sound becomes quite middle-y and a little bit muddy (like you get with tube compression), the more you try to raise the volume. There is a blend control to mix the natural sound of the guitar with the "processed" sound of the behringer, but to maximise volume you have to set this to full on to processed sound. The sound is a matter of taste, I only use this device when playing solo's to give me a lift, but do find the guitar ends up sounding more like an electric guitar (humbucker/neck position'ish). Hope this helps.

What voltage and current does the PSU give out for this/ what voltage and current does this unit need?

The unit uses a 9v power supply (either battery or adapter)It gives a balanced line output (XLR cable)Works well :-)Robert

Behringer Adi 21 Acoustic Amp Modeler Di

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Description

🎸 Elevate your acoustic tone—because your guitar deserves the spotlight!

PLUG PLAY POWER - Runs on 9V battery or optional PSU for hassle-free gigging and recording
VERSATILE DI OUTPUT - Dual DI mode offers direct recording with emulation or classic active DI bypass
AUTHENTIC TUBE WARMTH - Proprietary tube/microphone modeling delivers rich, natural acoustic amp sound
PURE SIGNAL INTEGRITY - Super-high impedance input preserves your guitar’s natural dynamics and clarity
PRECISION TONE SCULPTING - Ultra-musical 3-band EQ with sweepable mids to tame feedback and harsh piezo harmonics

The Behringer ADI-21 is a compact analog modeling preamp and DI box designed specifically for acoustic guitars with piezo pickups. Featuring a super-high impedance input, a 3-band EQ with sweepable mids, and authentic tube/microphone emulation circuitry, it delivers warm, natural acoustic tones while controlling feedback and harsh harmonics. Dual DI modes provide flexible direct recording or standard DI output via gold-plated XLR or ¼" TS connectors. Powered by a 9V battery or optional PSU, the ADI-21 is a budget-friendly, professional-grade solution for live and studio acoustic sound enhancement.

Specifications

ASIN	B000KITQK2
Batteries	1 9V batteries required.
Best Sellers Rank	16,088 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 3 in Acoustic Guitar Preamps
Colour	multi
Colour Screen	No
Country Produced In	china
Customer Reviews	4.3 4.3 out of 5 stars (967)
Date First Available	14 Dec. 2006
Item Weight	458 g
Item model number	ADI21
Product Dimensions	5 x 10.01 x 12.7 cm; 458.13 g
Styling	Tube
Voltage	9

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Behringer ADI-21 Acoustic Amp Modeler/ DI

Description

Specifications

Common Questions