QII-Eighty
Power Amplifier
Designed by Tim DeParavicini, the Quad II-Eighty takes inspiration from the original Quad II amplifier. It is an 80-Watt mono power amplifier following in the tradition and philosophies of Peter Walker. The output section...
View all
Specifications
-
Damping Factor
16 @ 1kHz (referred to 8 Ohms)
-
Frequency Response
10Hz 30kHz (+0dB, 0.5dB)
3Hz 50kHz (3dB)
-
Output Impedance
4 Ohms or 8 Ohms, selectable
-
Power Output
80W RMS
-
Power Consumption
240VA maximum
All specifications
Quad QII 80 MONO POWER AMP Lancaster Grey
QII-Eighty
Power Amplifier
Designed by Tim DeParavicini, the Quad II-Eighty takes inspiration from the original Quad II amplifier. It is an 80-Watt mono power amplifier following in the tradition and philosophies of Peter Walker. The output section consists of 4 KT88 valves running as two pairs in push-pull with the hallmark Quad topology of partial cathode loading in the output transformer.
Functions
Damping Factor
16 @ 1kHz (referred to 8 Ohms)
Frequency Response
10Hz 30kHz (+0dB, 0.5dB)
3Hz 50kHz (3dB)
Outputs
Output Impedance
4 Ohms or 8 Ohms, selectable
Power
Power Consumption
240VA maximum
About brand
Quad
The history of Quad is one of technical achievement in the field of sound reproduction. It is a story that began with the Quad 1 amplifier, which brought the benefits of 15 years knowledge and experience in professional audio and industrial products to the task of making the most accurate domestic audio amplifier of its age.A few years later, in 1953, the product which set the standard for amplifiers was the Quad II Power Amplifier, the time of Queen Elizabeth’s Coronation and the year in which Mount Everest was finally conquered. This amplifier pioneered the principle of cathode coupling through the output transformer to reduce harmonic distortion to almost negligible levels. Such was its clear superiority that this model remained in production for 18 years. Three years later, in 1956, Quad demonstrated the first true full-range electrostatic loudspeaker. This remarkable product (known later as the ESL 57) used a virtually mass-less plastic film as a moving diaphragm between two charged plates. Compared with moving coil loudspeakers, the ESL 57 was free of unwanted colourations and distortions. This landmark product remained in production, virtually unchanged, for 28 years.
Find out more about Quad