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Previously owned in good condition with minimal scratching. SOLD AS A PAIR! R52000 Great deal for Bi-Amping or Bridged Monoblock mode!

Upgraded fuses: External fuses have been upgraded to German HiFi Tuning Fuses (5 behind each Amp). Internal fuses have been upgraded to Japanese Furutech Light-Blue Fuses (4 in each Amp)

soundcare SuperSpike feet (4 under each Amp)

HCA-2200 MKII ULTRA HIGH CURRENT AMPLIFIER. Our premiere amplifier created by legendary designer John Curl has been called by Stereophile,"...a benchmark product against which other amplifiers can be measured."


Two independent 1200vA toroid power transformers
Independent transformer windings for driver stage regulators
Higher driver rail voltages and independent regulation to prevent sag
100,000uF computer-grade capacitors in power supply
Multiple polystyrene bypass capacitors in power supply
Cascode Class A input stages with matched J-FET pairs
Hand picked Mosfets in high voltage driver stages
24 5OMhz, 15 ampere output transistors, B-matched complements
Output transistors direct-coupled without inductors
DC servo direct-coupled audio circuits with 0.3Hz rolloff
Linear tracking, instantaneous acting DC servos
Pure Class A operation up to >6 watts output; Class AB-1 thereafter
Balanced input circuits, XLR connectors, separately switched
Gold-plated metal structure RCA input jacks
Multiple temperature sensors and silver-cadmium relay protection
FR-4 glass epoxy circuit boards, outputs double clad for high current
Dual mono circuit topology for superior separation past 20kHz
Proprietary quick-settling bias circuits obviates warmup period
Silver plated audiophile-grade wiring drivers to outputs
Precision 1% tolerance Holco and Resista metal film resistors


Continuous Power Output - Stereo
    250 watts RMS x 2, 20 Hz-20 kHz, 8 Ω
    385 watts RMS x 2, 20 Hz-20 kHz, 4 Ω
    385 watts RMS x 2, 20 Hz-20 kHz, 2 Ω
Continuous Power Output - Mono
    750 watts RMS, 20 Hz-20 kHz, 8 Ω
    1000 watts RMS, 20 Hz-20 kHz, 4 Ω
Current Capacity
    50 amperes continuous
    90 amperes peak
Slew Rate
    >135 V/Ásecond
Frequency Response
    2 Hz-95 kHz, +0/-1.5 dB
Total Harmonic Distortion
    < 0.05% at full power
    < 0.009% typical levels
IM Distortion
    < 0.03%
Dynamic Headroom
    > 1.5dB
lnterchannel Crosstalk
    > 84 dB at 1 kHz
    > 74 dB at 20 kHz
Input Impedance
    100K Ω/RCA-unbalanced, 200K Ω/XLR-balanced
S/N Ratio
    > 114 dB, input shorted, IHF A weighted
Damping Factor
    > 1000 at 20 Hz
    19" wide x 7" high x 15" deep
    60 lbs. net
AC Power Requirements
    1000 watts