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Pioneer A-27 Vollverstärker Class-A Pioneer A-27 Vollverstärker Class-A Posted On 28.02.2022
Last Update On 28.02.2022 Pioneer A-27 Vollverstärker Class-A
Pioneer A-27 Vollverstärker Class-A Pioneer A-27 Vollverstärker Class-A Pioneer A-27 Vollverstärker Class-A Pioneer A-27 Vollverstärker Class-A
Description Original Description is in English, other language texts are translations and can contain errors. EnglishDeutschTurkish

The Pioneer A27 is one of the highest quality integrated amplifiers Pioneer has brought to the market!

Up to 30W, the A 27 works in pure Class A mode.

The Pioneer A-27 is exceptionally well preserved, almost in collector's condition.

The device was meticulously overhauled 5 months ago for €750 and sounds like it did when it was first launched 40 years ago.

Additional information:


Manufacturer: Pioneer

Model: A-27

Model series: Series 20

Type: Class AB integrated amplifier

Years of construction: 1978 - 1981

Manufactured in: Japan

Color: metal silver / black

Power Consumption: 980W

Dimensions: 454 x 167 x 468 mm (WxHxD)

Weight: 24.7kg

New price approx.: 3,200 DM


Number of inputs:

Phono 1MM: 2.5mV/100ohm, 10kohm, 25kohm, 50kohm, 100kohm (selectable 100pF, 200pF, 300pF, 400pF, 500pF), max 300mV

Phono 2 MC: 0.250mV/100 ohms, max. 30mV

Tuner, AUX: 150mV / 50kOhm

Tape Play 1, 2: 150mV / 50k ohms

Main In:

Number of exits:

Tape Rec 1, 2: 150mV / 1k ohms

Pre Out:

THD (5Hz - 30kHz) 0.005% at 1V

THD (5Hz - 30kHz) 0.01% at 15V)

2 pairs of speakers


Technical specifications

Continuous power Class AB (Class A operation up to 30W)

8 ohms: 2 x 120W (5Hz - 30kHz, THD 0.01%)

4 ohms: 2 x 120W (5Hz - 20kHz, THD 0.02%)

dynamic performance

8 ohms:

4 ohms:

Total Harmonic Distortion: 0.01%

THD : < 0.01% (10Hz...30kHz, 8 Ohm, rated power)

< 0.01% (10Hz...30kHz, 8 ohms, 60W)

< 0.007% (10Hz...30kHz, 8 ohms, 1W)

Damping factor: 70 (5Hz - 30kHz, 8ohm)

Frequency response: 5 Hz - 200 kHz, +0 -1dB (at 1W)

Power bandwidth: 5 Hz - 100 kHz (THD 0.05%)

Signal-to-Noise Ratio: 120dB

Channel Separation:

1kHz: 105dB

100kHz: 70dB

signal-to-noise ratio:

> 91dB (phono MM)

> 80dB (phono MC)

> 100dB (tuner, tape, aux)

Tone control:

Bass 50Hz: ±4dB

Bass 100Hz: ±5dB

High frequency 10kHz: ± 5dB

High frequency 20kHz: ± 4dB

Low Filter: 15Hz, 6dB/octave, 12dB/octave

Muting: 0dB, -20dB

Special equipment

Pioneer A-27 Class AB integrated amplifier: For many, the first real high-end amplifier

Pre and power amp separable

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