Kove Audio ZX 1000 . Hard to find. Here's some specs straight from the owner's manual: - Defeatable Aphex processing for harmonic expansion - Variable crossover for switchable HP/LP/FULL range - Unique 30 volt technology provides gains in headroom and S/N ratio - 6-way protection (overcurrent, DC offset, overvoltage, soft start, thermal, undervoltage) - Extremely high damping factor - Double-sided circuit board with dual traces - Complimentary discrete bipolar design for maximum high current output - Massive dual MOSFET power supplies - Adjustable 15dB 45Hz bass boost - Simultaneous stereo/mono operation - Reversible nameplate badge - High mass stealth cast aluminum heatsink - Custom wound transformers - 105C caps and precision resistors Rated at 13.2VDC (unregulated supply so output will be higher at higher VDC): - 200 x 2 @ 4 ohms - 350 x 2 @ 2 ohms - 700 x 1 @ 4 ohms - THD <.05% - Freq. response 10Hz - 30kHz - S/N >100dB - Input sens. 100mV - 5V - Stereo separation >85 - Damping factor >500 - Slew rate 85V/us - 10.25"W x 2.5" H x 19.75"L - ~18lbs. - (3) 25A onboard ATC fuses - 4 ga. power, 8 ga. speaker connections Very strong amplifier. $600