Even if the first issue of the Quad II has seen the light of day back in 1953, in the early days of electronics, it has remained in production until the 70's, because it was an amplifier that really had something heavy to say on the market. Regardless of the amount of time that has passed from its debut, the Quad II is still a respected piece of reference audio technology because it carries on the amazing heritage of its creator, Peter Walker.



The Quad II has been now brought back to life much to the audiophiles' joy; it brings the same characteristics that have made it famous in the first place – uncompromising sonic quality, very noble looks and groundbreaking technology design. The thing that had made the Quad II stand from the crowd back then in '53 and makes the Quad II-Classic exclusive today is the special design and electronic engineering of the output stage in the amp.



The Quad II sported a cathode coupled circuit that emulated the way a triode performed, but in the size and efficiency of a pentode vacuum tube. This engineering assessment has remained almost legendary over the years in the world of valve electronics and was replicated in the new version of this mono amplifier as well, thus retaining the clarity and utmost coherence of the sonic response.



The Quad II-Classic is a mono amplifier and its size may deceive you into believing its sound is small as well. As a matter of fact, the Quad II-Classic can deliver up to 15W RMS on each channel; even more, this amp runs in Class A specs, offering a rather small power but with unparalleled fidelity and allowing the listener to benefit from all subtleties of the sound.



The Quad II-Classic sports a wide and very neat frequency response that stretches from an amazing 10Hz bottom-end to 20kHz and will work with 8 ohms loudspeakers.