HK reciever amps?

[Jw_Leonhart]

Does anyone know what type of amp it uses? A, AB, etc.?

[Colin]

from HK site:

owners manuals, heritage models:

http://www.harmankardon.com/specifications.asp?cat=REC&ser=∏=HK330B&sType=H

SPECIFICATIONS: Tuner Section

Sensitivity : FM - 2.5 microvolts IIHF

AM - 350 microvolt/meter

Signal-to-Noise Ratio : 60dB

Capture Ratio : 3dB

Image Rejection : 40dB

-40dB

Spurious Response Rejection : 60dB

De-emphasis : 75 microseconds +/-1.5dB

IF Rejection : 60dB

-70dB

AM Rejection : 50dB

Multiplex Separation : 25dB at 1kHz

Total Harmonic Distortion : MONO - 1%

STEREO - 1.5%

Alternate Channel Selectivity : 50dB

Antenna Input : 300 ohms

Selectivity : 50dB (at +/-400kHz)

General

Power Output : 18W min. RMS/ch, both ch driven @ 8 ohms (50Hz - 20kHz < 0.8%THD)

22W RMS/ch, both driven @ 8 ohms (1kHz < than 0.8% THD)

Power Bandwidth : 25Hz - 20kHz at < 1% THD @ 8 ohms both channels driven simultaneously at 9 watts

Frequency Response : 20Hz - 20kHz at < 0.5% THD @ 8 ohms both channels driven siultaneously at 1 watt

Rise Time : SQUARE WAVE - Better than 5 microseconds

Total Harmonic Distortion : <0.8%THD from 250 milliwatts-18WRMS, both channels driven @ 8 ohms from 50Hz-20kHz

Intermodulation Distortion : < 0.5% at rated output power

Hum and Noise : better than 75dB below rated output

PHONO - 60dB below rated output

Damping Factor : 30:1

Tone Control Range (±) Bass 50Hz/Treble 10kHz: : BASS - 12dB boost andcut at 50Hz

TREBLE - 12dB boost andcut at 10kHz

ERROR - +/-1.5dB at flat setting

Phono Input Sensitivity : 3.3mV

Phono Overload : 70mV

Impedance : PHONO - 20k ohms

Loudness Control : +/-10dB at 50Hz, 40dB below full output

I assume Class A/B....