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For Sale: Abacus 128-step relay passive preamplifier with remote

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For Sale:
Abacus 128-step relay passive preamplifier with remote

Will Ship To: Anywhere

This is a passive amplifier with 128-step relay controlled volume attenuator. Relatively simple but at the same time completely transparent audio affair. The attenuator uses micro controller and 7 relays that are switching the network of high quality resistors in 128 step increments. The signal path is completely isolated.

 

Two switchable inputs and one pair of outputs.

 

Everything is housed in high quality aluminum case, remote controls the volume.

 

I used it as a backup for my LDR based preamplifier with excellent results. It is perfect in front of a tube power amplifier.

Listing includes 12V DC power supply

Shipping - $12.00 in CONUS, PayPal add 3%


Edited by djdonis - 5/18/14 at 6:15pm
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