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Heathkit AP-1800

Rack Mount Stereo Preamplifier

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Heathkit AP-1800


Designed for use with the AA-1600 and AJ-1600 rack-mounted audio components, the Heathkit AP-1800 is an extremely versatile preamplifier.

It provides the complete and versatile control of audio signals without the introduction of audible distortion or colouration.

Quality design and special features make it an extraordinary value: dual turnover tone controls permit more precise tone adjustment.

Three phono inputs include one with a built-in preamp for moving coil cartridge. Selectable cartridge capacitance provides flattest frequency response for your cartridge. Phono overload indicator assures correct sensitivity.

Magnetic phono preamp is designed for lowest noise with cartridge connected (rather than preamp shorted) for super-quiet performance under real working conditions.

Dual turnover filters permit more subtle filtering. Built-in infra-sonic filter reduces rumble and low-frequency noise from your records.

Versatile record mode lets you record from deck 1 to deck 2 or vice-versa while listening to source or tape.

Independent loudness control is based on new, more accurate data.

Adapter switch allows addition of noise reducer or equalizer.

Precision attenuator-type volume control provides more accurate tracking between channels even at low levels.

The AP-1800 switches up to 1500 watts (maximum) of power.


Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.02%

Input sensitivity: 0.2mV (MC), 2mV (MM), 200mV (line)

Signal to noise ratio: 70dB (MC), 75dB (MM), 95dB (line)

Channel separation: 50dB (MM), 50dB (line)

Output: 1.5V (Pre out)

Dimensions: 19 x 5.22 x 11.25 inches

Accessories: optional AEA-1800-2 oak finish cabinet

Price: USD $399.95


schematic   English - Sblesieur

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re: AP-1800

hello friends. i did buy an AP-1800 preamp yesterday. anybody has a service manual for it? greetings from Brazil

re: AP-1800

Missing the power supply page.Wish someone could add that page.

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