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CITATION 7.1 Amplifier:
Harman Kardon Citation 7.1 Multi-Channel THX Amplifier 450Wx2 150Wx4 Made in U.S.A by Madrigal Labs(makers of Mark Levinson gear)!
CAVEAT: This amp works PERFECT, and sounds glorious. It IS cosmetically challenged, but looks pretty presentable from the front. It has a bent fin, a ding on front top corner, and and small dings on rear fins, etc. It has been discounted $200 to account for this, but is a STEAL for a SUPERB sounding, versatile amp. You would have to pay at least $8-9000 to get an amp of this sound quality nowadays.
Puts out 130 AMPS PEAK CURRENT, which is utterly INSANE. Even many good amps only put out 20-30 amps peak current. 2200VA toroidal, with 10 very high capacity output devices per ch..
I have 4 of these amps (all were purchased used on Audiogon years ago), and am selling my 2 spares, which I never use(thought I would when I bought them), because the 2 amps I DO use are extremely reliable, and these spare amps….just are not needed, and have been collecting dust the last 5 years. Also I’m getting divorced, so I’m selling off a lot of gear…
I just re-tested this amp on my big rig, and the sound quality is a dead heat, with my Bel Canto REF1000 monoblocks….which are Stereophile Class “A” rated. YES
…..these amps are THAT good. Go to audioreview dotttt commm (spelled this way to get by filter), and read the 26 reviews with an avg. 4.92/5 rating.
I currently use my 2 Citation 7.1 amps in bridged mode, to run 4 custom, 15” TC Sounds subs, which are 3.5 ohm, and low sensitivity, but sound devastating. These amps have run them exceptionally, and reliably well, for years.
4 x 150 watts @ 8 Ohms, 4 x 240 watts @ 4 Ohms
2 x 150 watts + 1 x 450 watts @ 8 Ohms
2 x 450 watts @ 8 Ohms bridged
FTC: 20 Hz - 20 kHz, .03% THD, All channels driven
HCC 130 Amps/channel in dual mono mode
Frequency Response < 3 Hz - 200 kHz Â±3 dB at rated output
THD/IMD Less than 0.03% at rated output
Power Bandwidth 5 Hz - 130 kHz
Input Impedance 22k Ohms
Input Sensitivity 1.1 volts for rated output
Dimensions (HxWxD) 7 1/2 x 17 15/16 x 17 1/2"
191 x 456 x 445 mm
Weight 75 lbs / 34 kg
Power Requirements 120/230VAC, 50 - 60 Hz; 2500 watts, maximum
Steve Mantz of Zed audio was the one who designed this amp. Here is what he had to say:
Steve Mantz, now with Zed Audio, was instrumental in the Citation 5.1 and 7.1 amp creation:
"We did design and build the Citation 7.1 and the smaller 5.1. We built a lot of these for Harman International. The amplifiers are flat from DC to 270KHz where the response is about 1dB down. Harman wanted this silly specification, why I do not know because we are not bats and cannot hear that high. The original specification was that they wanted the amplifier to go out to 600KHz, but the first prototypes were NOT happy out there and so we 'compromised' at just under 300KHz.
Each channel uses 10 Toshiba 20MHz output devices with a theoretical dissipation of 1,500 watts. The circuitry is fully complementary from input to output and it has some very unique features. Each channel has 6 power supplies which are separate from the other channels. The only common item between channels is the power transformer, which is a 2.2Kw toroid. This 2.2Kw rating is at 25 deg C and it can put out upwards of 3Kw at higher temperatures.
The input complementary differential pairs are driven by temperature compensated constant current sources, which ensure almost zero drift of the DC conditions with each channel. These are also cascode connected for maximum bandwidth. The main gain stage is also cascoded for increased bandwidth and is also Darlington configured for high current gain.
The output stage is a triple Darlington with ultra fast turn off delay. The main power emitter resistors are non inductive types. No coils are used in the speaker circuit and the amplifier is stable into reactive loads with a phase angle of over 45 degrees. It has the usual plethora of protection circuits which by the way are not in the audio path. The amplifier can be turned on with a remote trigger or by the rocker switch on the rear. It can be changed to run from 100v to 240 AC 50/60Hz.
I have the last two production amplifiers at home, one of which I use in my own system for the subs. I run it in bridge mode into a 2 ohm load, and I get out 1Kw per pair of bridged channels. I did modify the protection circuit to allow me to run each channel into 1 ohm!
I have used the amplifier for 8 years now and it has run flawlessly." - Steve Mantz
PAYPAL fees, if any, are buyer's responsibility ), BUT will accept personal check from TOP rated Audiogoners, with great feedback (at my discretion)
International shippers are responsible and must set up their own shipment, and email me the shipping label....I'm not setting up the international shipping.
This ad was originally posted on US Audio Mart.