DIY Audio Projects

Past and present projects by group members include: 

• Push-pull Amplifier using the 813 valve.
• 40w Class A all-triode power amp, as seen in Glass Audio.
• Single-ended triode power amp using pre-war 300B valve.
• No-compromise all-triode pre-amp.
• Class A MOSFET power amp.
• DIY electrostatic speakers.
• A Naim preamp PSU using DC to DC convertors.
• An air-bearing turntable.
• DIY high-purity silver interconnect and speaker cables.
• Several DIY DAC designs with special emphasis on low-jitter and low PSU interaction. 
• High purity master clock oscillator for CD. 
• Circuit optimisation with Spice simulation.
• Minimalist valve output stages for DACs.
• A computerised preamp: in-room frequency and phase compensation plus active crossovers running on a PC.

Some of these projects can be seen on our Systems pages.