You are bidding on a slightly used  Aphex Model 124A Audio Level Interface. This unit  is designed to allow use of -10dBV consumer hi-fi equipment with +4 or +8dBm professional / industrial / broadcast audio systems. It provides an extremely clean, reliable two-way buffer so both systems can operate at maximum performance levels, matching impedances and operating levels.  If you buy 2 units I will send you both mounted in a 1RU rackmount kit if you prefer. Just let me know after you win the auction. The picture of the front is not the actual unit you will be getting, but it is the exact model. Some might have light scratches or P-Touch labels from a previous application. Guaranteed against DOA. Comes with power cable.

APPLICATION:
Two-way interface amplifier for connecting any unbalanced device such as a cassette deck, equalizer, CD player or DAT deck to the IHF inputs and outputs. The balanced inputs and outputs go to a studio console, patchbay or other line level equipment. The different gains and impedances are matched for optimal performance.

Line driver. The servo-balanced input and output stages of the 124 can be used as a very effective line driver for long lines. The output stage provides a short-circuit proof, low impedance source that will be relatively unaffected by the impedance of the cable. Gain may even be taken to boost signal level. In this application, either the unbalanced IHF or balanced high level inputs may be used. For the latter, the IHF inputs and outputs are simply jumpered.

Signal splitter. The 124 may be used to provide two high quality balanced outputs from a single unbalanced mono signal A"Y" connector is used to split the incoming signal to each of the IHF unbalanced inputs.

IHF distribution amp. The very low output impedance of the 124 allows it to drive a considerable number of unbalanced devices such as cassette decks, VTR's, power amps, etc. Balanced or unbalanced inputs can be selected by patching the various inputs and outputs.  The 124 is housed in an all metal package which is compact and self-powered. It may be attached to its dedicated piece of equipment; rack mounted singly or in pairs using the optional rack mounting kit.

Power Requirements      100, 120, 220, OR 240 VAC, 50-60Hz
Dimensions 1.75"H x 8.25"W x 7.25" D  (44.5mm x 209.5mm x 184.2mm)
Shipping  Weight 10 lbs


For more info:
http://www.aphex.com/124A.htm