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QII 40 Lancaster Grey
The Quad II-forty power amplifier is much more than a tribute to one of the most famous designs in audio – but refined and powerful in the modern sense of the terms. Although the circuit topology has changed a little from the original, significantl...
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Specifications
- Country (main office) United Kindgdom
- Type power amplifier
- Color Lancaster Grey
- Damping factor 20
- Gain channels 1
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Quad QII 40 Mono Power AMP Lancaster Grey
The Quad II-forty power amplifier is much more than a tribute to one of the most famous designs in audio – but refined and powerful in the modern sense of the terms. Although the circuit topology has changed a little from the original, significantly better components and transformer design have been engineered. While still being delicately balanced a fast, crisp and detailed sound is achieved, whilst producing an output current suitable for modern loudspeakers, including the Quad ESL. KT-88 output valves work in a push-pull configuration, while a choice of 4 Ohm or 8 Ohm taps allows for a wide choice of loudspeaker configurations.
The amplifier had to retain the retro look of its famous predecessor but with the transformer and power, amplifier section blended into a modern compact design. It has an understated elegance which lies beneath its smooth curves and lustrous finish, referencing the time when vacuum tubes ruled the electronics industry and Quad founder Peter Walker was considered by many to be the master of audiophile design.
All Quad products are expected to last a lifetime – even longer. Many Quad customers still derive immense pleasure listening to products built only fifty years ago. The Quad II-forty power amplifier is no exception, and with periodic servicing and a caring hand, you can expect its performance to continue for years to come.
Specifications
Basic
Country (main office)
United Kindgdom
Type
power amplifier
Color
Lancaster Grey
Damping factor
20
Gain channels
1
Headphone output
no
Lamp model
2 x 6SH7, 2 x KT88, 1 x 5U4G
Maximum frequency, Hz
30000
Minimum frequency, Hz
10
Remote control
no
Signal-to-noise ratio, dB
80
THD (Total Harmonic Distorsions), %
0.3 (40 W), 0.03 (1 W)
Features
Arrow indicator
no
Equalizer
no
Separate terminals for different impedances
yes
Functions
Built-in DAC
no
Inputs
RCA line inputs
1
Power
Power consumption, W
180
Power per channel (4 ohm), W
40
Power per channel (8 ohm), W
40
Wireless connection
Bluetooth
no
Wi-Fi
no
Dimensions
Weight, kg
16.48
Height, mm
185
Depth, mm
200
Width, mm
390
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
We also offer you
About brand
Quad
Free expert consultation
Connection and setup
Call an expert
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