Quad - 405 Solid state power amplifier
06
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Selected by Ariel Cabello
Holds dual bachelor's degrees in electronics and physics with 20 years in audio engineering.
Estimate € 430 - € 500
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Quad 405 two-channel power amplifier, manufactured in 1975, in very good physical condition and tested and working.
AI-assisted summary
Description from the seller
Legendary Quad 405 power amplifier, in technically excellent condition. Fully revised with new capacitors, speaker terminals and RCA analog input.
The Quad 405 is a two-channel power amplifier designed for both domestic and professional use and uses current dumping, which avoids many transistor problems.
The amplifier can be used in conjunction with the 33 control unit or a similar high-quality preamplifier.
Thanks to its high output power, it is suitable for use with many of today’s high-end loudspeakers and offers possibilities for further development in loudspeaker technology, with less emphasis on efficiency.
The appearance continues Quad’s tradition of practical simplicity, which has earned praise and worldwide acclaim on earlier models.
Through a combination of cast and extruded parts, a device has been created that is strong and visually as well as tactilely attractive.
Not all loudspeakers can safely handle the Quad 405’s full output, and the amplifier is equipped with an internally mounted power limiter for use in such cases.
Quad’s electrostatic speaker can be safely used with the power limiter engaged.
Specifications:
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: 95dB
Speaker load impedance: 4Ω to 16Ω
Dimensions: 115 x 340.5 x 195mm
Weight: 9kg
Legendary Quad 405 power amplifier, in technically excellent condition. Fully revised with new capacitors, speaker terminals and RCA analog input.
The Quad 405 is a two-channel power amplifier designed for both domestic and professional use and uses current dumping, which avoids many transistor problems.
The amplifier can be used in conjunction with the 33 control unit or a similar high-quality preamplifier.
Thanks to its high output power, it is suitable for use with many of today’s high-end loudspeakers and offers possibilities for further development in loudspeaker technology, with less emphasis on efficiency.
The appearance continues Quad’s tradition of practical simplicity, which has earned praise and worldwide acclaim on earlier models.
Through a combination of cast and extruded parts, a device has been created that is strong and visually as well as tactilely attractive.
Not all loudspeakers can safely handle the Quad 405’s full output, and the amplifier is equipped with an internally mounted power limiter for use in such cases.
Quad’s electrostatic speaker can be safely used with the power limiter engaged.
Specifications:
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: 95dB
Speaker load impedance: 4Ω to 16Ω
Dimensions: 115 x 340.5 x 195mm
Weight: 9kg
Details
Era
1900-2000
Brand
Quad
Model
405
Multiple models
No
Physical condition
Very good
Number of objects
1
Includes
No extra's
Year of manufacturing
1975
Weight
10 kg
Functional condition
Tested and working/playable
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