An amplifier is the workhorse of any system – it is responsible for receiving small signals from a preamplifier or source component, and developing them into larger currents to control a loudspeaker. To that end, the GS150 has been designed to seamlessly integrate into any system and steadfastly perform its task. Challenging source material and difficult speaker loads are met with control and finesse to present a musical landscape of breathtaking proportions.

Three meters across the front panel provide a window into the operation of the amplifier and give the amplifier a striking façade. The selection of premium parts internally is reflected in the beautiful metalwork of the chassis and exquisite finishes. The circuit is design features the new KT150 power output tubes for 150 watts of effortless power delivery. A reflection of the past yet clearly a guiding light into the future of music reproduction, the GS150 is poised to deliver years of musical enjoyment. 

Technical specifications

POWER OUTPUT
155 watts per channel continuous from20Hz to 20kHz. 1kHz total harmonic distortion typically 0.6% at 155 watts, below 0.03% at 1 watt.Approximate actual power available at ‘clipping’ 160 watts (1kHz). (Note that actual power output is dependent upon both line voltage and ‘condition’ i. e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not very critical.)

POWER BANDWIDTH
(-3dB points) 5Hz to 80kHz.

FREQUENCY RESPONSE
(-3dB points at 1 watt) 0.5Hz to 120 kHz.

INPUT SENSITIVITY
2.0V RMS BAL for rated output. (24 dB Bal gain into 8 ohms.)

INPUT IMPEDANCE
300K ohms Balanced.

OUTPUT POLARITY
Non-inverting. Balanced input pin 2+ (IEC-268).

OUTPUT TAPS
8 ohms, 4 ohms.

OVERALL NEGATIVE FEEDBACK
14dB.

SLEW RATE
13 volts/microsecond.

RISE TIME
2.0 microseconds.

HUM & NOISE
Less than 0.1mV RMS – 114dB below rated output (IHF weighted, input shorted).Controls: Rotary selector for tube bias, Power on/off, fan speed, auto shut-off on/defeat, RS232, 12V trigger

POWER SUPPLY ENERGY STORAGE
Approximately 1040 joules.

POWER REQUIREMENTS
105-125VAC 60Hz (210-250VAC 50Hz) 730 watts at rated output, 900 watts maximum, 420 watts idle.

TUBES REQUIRED
4 – Matched pair KT150 – Power Output; 4 – 6H30 Driver.

DIMENSIONS
19" (48.3 cm) W x 9 3/8" (23.8 cm) H x 22 3/4" (57.8 cm) D.

WEIGHT