symetrix A-220 Stereo Power amplifier

This unit is in Very Good condition, except for a long scratch along the top cover and a bit of discoloration on a the anodized front panel screws.   It works perfectly, and has Front panel level controls and a headphone jack.

From the Manual:

 The Model A-220 Stereo Amplifier is a compact, high performance power amplifier configured for use in professional and commercial audio systems. The A-220 may be operated as a two channel amplifier with 20 watts per..channel,.or as a single channel amplifier capable of 40 watts (in bridged mode). The amplifier is intended for suse with near field monitors, small speakers used for "radio reference" and audio for video, and with headphones.   In stereo mode the minimum load is 4-ohms, in mono-bridged mode the minimum load is 8-ohms.

For convenience, the A-220 is equipped with both 1/4" and XLR-3 input connectors, which will accept either balanced or unbalanced input signals.  Full power output can be produced with an unbalanced 5 volt (-6dBv) input signal, or a 1volt (OdBv) balanced input signal. 

 Outputs

Maximum Power---20 watts/channel into 8 ohms, both channels driven

40 watts into 8ohms, mono-bridged mode

20 watts/channel into 4ohms, both channels driven

Speaker Connectors ............................................................#6 spade lugbarrier strip 1/4" stereo Headphone output (front panel)

Dynamic Headroom .....................................................................2.5db stereo,5db mono  2 cycle, lkHz tone burst

Distortion and Noise
Measured  in 30kHz bandwidth ...........................................05%,  20Hz to 20kHz  .01% at lkHz

Input Sensitivity (for full output) ...............................................5V (-6dBv) balanced or unbalanced  (with unused input leg grounded for unbalanced inputs)

Inputs
Type.....Balanced, transfomerless (may  be used unbalanced)

Impedance ........>  10k   ohms
Maximum Level ...................................................................+18 dbv
Connectors............................................................................1/4" TRS,  & 3-pin XLR
Clipping Indicator .......................................................................Clip LED fires at the onset of clipping Signal to Noise Ratio
400-20kHz NBW..................................................................> 99d.B below full output
20Hz-20kHz NBW ...............................................................> 93d.B  below foll output

Frequency Response --20Hz--20kHz +O db, -l db

Power Requirements ....................................................................115VAC 60Hz, standard  230VAC 50Hz, upon request

Dimensions--1.75 x 19 x 8 in. (lU 19" rack mount)
(4.45x 48.3 x 20.3 cm)

Weight -- 9 lbs. (4.2kg)