Slow Gear Electronics Pedalboard Headphone Amplifier

Product Description

A complete solution for silent practice or live monitoring made to fit on your pedalboard.

Includes an Aux input on 3.5mm TRS, separate mix knob, only outputs on headphones. Use for connecting a phone/PC for silent rehearsal.

TS inputs and buffered outputs. No Aux on the buffered outs. L input is 1 Meg input impedance for direct connection of a guitar or bass. Buffered outputs are 47 Ohms output impedance. Connect to our M.A.I.D. for balanced XLR outs.

Power comes in via standard boss-style coaxial connector, center pin negative. 100 to 200mA supply depending on headphone impedance. Use up to 12V max for additional headroom. Will drive 8 ohm to 300 Ohm headphones or in ears via 1/4 inch TRS connector.

Physical dimensions are: 4.57 in x 3.0 in x 2.0 in (116 mm x 77 mm x 51 mm) including knob height

Connections include:

TS stereo inputs. High impedance (1Meg) input on the L channel for direct input of an instrument.
TS stereo buffered outputs. Guitar only.
3.5mm stereo Aux input with mix knob.
Gain switch for Instrument vs Line level (affects only the headphone output.
Mono sum switch affects both buffered TS outs and the headphone out.
Polarity affects R input for buffered R out and headphone out.
Runs on 9 to 12Vdc only. Needs 100mA to 200mA depending on headphone impedance.
Output is LOUD, noise is low.
Pair this with Slow Gear Electronics MAID (Micro Active Iso/DI) for a full pedalboard to PA solution.

Reviews

5 / 5

5 stars based on 1 reviews

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5 / 5By Pierre-Alain DUCOMMUN 09 / Jan / 2026
Superb pedal. I'm building a nomad headphone setup around the Strymon Iridium to practice anywhere I want (on which I could talk a lot but is another love story). But this one doesn't have an FX loop to put my reverb and my delay pedals. By placing them after the Iridium I needed an headphone amp... Oh and I forgot to precise, a STEREO headphone amp, because Iridium can output stereo and so are my other modulation pedals. There is not plenty of choice.... Small gear I would not buy with confidence or big stuff with a lot of useless options I would never use. Then I found this pedal on YouTube, and ordered one on reverb. This is perfect. Very well built, sturdy, I even opened it so see inside and everything is clean, well assembled and seems very good quality! This is straightforward utility, no useless gadget options... Just a usefull quality pedal. There is also an aux in input which is great to plug a metronome or drum machine, backing tracks or whatever. The only pedal which is direct concurrent is probably the Walrus Audio Rehearsal. But it is more expensive and I'm an old school guy, I don't like big color screens on my pedals, Bluetooth stuff and all those things. Bye!