Parasound HCA 1205a - THX 5ch amp - $425 (Robbinsville)

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condition: good
make / manufacturer: Parasound
model name / number: HCA 1205a
Parasound HCA 1205a THX ULTRA 5 channel amplifier. Good condition and sounds great. Always kept in a Smoke and Pet free home. 4 channels are flawless, but 6 months back, I noticed an occasional, very faint crackle from one channel. Turning the level knob for that channel would improve it or make it go away entirely. I lived with it for months because it's very subtle, but sprayed some electrical cleaner in the potentiometer (pot) and worked the knob (while it was unplugged), and it went away entirely for 3+ months, but its recently crept back. I use that channel for a rear surround so It's not that bad. I believe the level/pots need a good cleaning. The other 4 channels work perfectly. I have limited shelf space and downgraded to a reciever, so I don't need the amp anymore. Price is reflective of age and condition.

Circuitry designed by John Curl
THX Ultra-certified
Direct Coupled -- no capacitors or inductors in signal path
DC Servo and relay protection circuits
High bias Class A/AB operation
1.6 kVA Toroid power transformer with independent secondary windings for each channel, 100,000 �F power supply filter capacitance
Independent power supplies for each channel
Input stages use hand matched complementary JFETs
30 beta-matched 15 amp, 50 MHz bipolar output transistor
AC present, standby/normal, current overload indicators
Rear mounted gain controls and rear handles
12 volt DC automatic turn-on circuitry; ground lift switch
Tiffany-style RCA input jacks
Gold-plated 5 way speaker binding posts
Custom designed removable IEC AC cord
3 rack space height front panel
Rack mounting adapter available

Continuous Power Output - Each Channel:
140 watts RMS x 5, 20 Hz - 20 kHz, 8 Ω;
200 watts RMS x 5, 20 Hz - 20 kHz, 4 Ω
Current Capacity:
45 amperes peak per channel
Slew Rate:
130 V/�second
Power Bandwith:
5 Hz - 100 kHz, +0/-3 dB at 1 watt
Total Harmonic Distortion:
< 0.03 % at full power; < 0.01 % typical levels
IM Distortion:
< 0.03 %
Dynamic Headroom:
> 1.5 dB
Interchannel Crosstalk:
> 80 dB at 1 kHz
> 60 dB at 20 kHz
Input Impedance:
33 k Ω
Input Sensitivity:
1 V for 28.28 V, THX Reference Level; 1.2 V for full output
S/N Ratio:
> 117 dB, full power; > 96 dB, THX Reference Level
Damping Factor:
> 800 at 20 Hz Power Consumption: 1500 watts
w 17 1/4" x h 5 1/4" x d 19", h 6" with feet
Net Weight:
46 lb.

post id: 7747332970


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