QUAD 606 MK1 UPGRADE STAGE 2

Quad 606 Mk1 amplifiers represent one of the best hifi bargains around. With its roots in the amazing 405, the circuit has been refined for improved sound-quality.

With a large transformer and space for larger power smoothing capacitors it is a robust sounding candidate for upgrade.

With our upgrades applied, the Quad 606 gets smoother, slightly more detailed and has more air & space around instruments. The improved and additional capacitors remove more noise and ripple from the power rails improving every aspect of the sound. You get greater transparency and a cleaner sound which keeps you listening for long periods with no listening fatigue.

The Stage 2 upgrade improves things further with extra power supply filtering. We also add two of our mini-shunt voltage regulators to the input stage. This improves clarity and small-scale dynamic shading and really does provide a more natural sound.

QUAD 606 MK1 UPGRADE STAGE 2

• Mundorf MLytic AG Low-ESR/ESL power supply smoothing capacitors
• Elna Cerafine audio-grade electrolytic capacitors
• Additional High Quality PPS Film Capacitor decoupling added
• Additional Elna Cerafine decoupling capacitors
• Improved signal-path wire using Red Hill Audio 1TP SPS for better sound quality and noise rejection
• 2 x Mini Shunt Voltage Regulators
• Gain reduction - 1.0v input for maximum output
• Silvered Mica 1% Signal Path Capacitors