I suddenly find myself with two USA6300 amps, and I only need one. I chose this model because it's the smallest of the Zed-built 6 channels, and the specs are equal to or better than the Zed/Nakamichi PA-506, but in a smaller package. Since I'm going to mod the one I'll be using, I'm selling the nicer of the two. It does have scratches and chips, but all the knobs, buttons, and screws are there, and the decal is intact. It does not have the plastic feet. I'd be willing to include a new set of feet from one of my USB amps for $10 extra. The price on the amp is $170 shipped, which is exactly what I have in it.
Now for the specs. There's one thing worth pointing out on this amp, something somewhat unique in the Zed-built US acoustics. Channels 5 and 6 are 1-ohm stereo or 2-ohm bridged stable. Note that there are only 2 sets of inputs, but there is a gain control for each set of channels, including channels 5 and 6.
RMS, per channel @ 4 Ohms @ 12.9v: 50W x 4 + 65W x 2
RMS, per channel @ 2 Ohms@ 12.9v: 75W x 4 + 80W x 2
Channels 5 and 6 only: 150W x 2 into 1 Ohm or 300W x 1 into 2 Ohms
Input Sensitivity 100mV - 8V
Slew Rate 20V / microsecond
Total Harmonic Distortion Less than 0.01%
S/N Ratio 104dB
Damping Factor Greater than 100
Phase Response Lagging 12 degrees @ 20KHz
Input Impedance 22K Ohm
Protection:
Reverse Polarity: Yes
Thermal: Yes
Short Circuit: Yes
DC: Yes
Idle Current: 1.0A
Fuse Rating: 25A x 2
Length: 15.3" (about 17" including the mounts and speaker terminals)
Width: 8.2"
Height: 1.9"
Weight 9.00 lbs
Now for the specs. There's one thing worth pointing out on this amp, something somewhat unique in the Zed-built US acoustics. Channels 5 and 6 are 1-ohm stereo or 2-ohm bridged stable. Note that there are only 2 sets of inputs, but there is a gain control for each set of channels, including channels 5 and 6.
RMS, per channel @ 4 Ohms @ 12.9v: 50W x 4 + 65W x 2
RMS, per channel @ 2 Ohms@ 12.9v: 75W x 4 + 80W x 2
Channels 5 and 6 only: 150W x 2 into 1 Ohm or 300W x 1 into 2 Ohms
Input Sensitivity 100mV - 8V
Slew Rate 20V / microsecond
Total Harmonic Distortion Less than 0.01%
S/N Ratio 104dB
Damping Factor Greater than 100
Phase Response Lagging 12 degrees @ 20KHz
Input Impedance 22K Ohm
Protection:
Reverse Polarity: Yes
Thermal: Yes
Short Circuit: Yes
DC: Yes
Idle Current: 1.0A
Fuse Rating: 25A x 2
Length: 15.3" (about 17" including the mounts and speaker terminals)
Width: 8.2"
Height: 1.9"
Weight 9.00 lbs
