Quad 405 used
The Quad 405 is a two channel power amplifier designed for domestic and professional use employing current dumping which eliminates many transistor problems.
The amplifier can be used with the 33 control unit or similar high quality pre-amplifier.
The high power output makes it suitable for use with many of today’s high quality loudspeakers and provides opportunity for farther loudspeaker engineering development with less emphasis on efficiency.
The external design continues the Quad tradition of practical simplicity which has won prizes and worldwide acclaim on previous models.
A combination of mouldings and extrusions is used to produce a unit which is strong and pleasing both to the eye and the touch.
Not all loudspeakers can safely accept the full output power of the Quad 405, and the amplifier is provided with a power limiter which is fitted internally for use in such cases.
The Quad electrostatic loudspeaker can be used safely with the power limiter in.
Power output: 100 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.05%
Input sensitivity: 0.5V
Signal to noise ratio: 96dB
Speaker load impedance: 4Ω to 16Ω
Dimensions: 115 x 340.5 x 195mm