GR Research Custom OB-7 with custom built PP Triodes

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Bill Baker

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  • Purity Audio Design -Custom Design and Manufacturi
    • Musica Bella Audio
I still have a pair of 60 watt 6C33 mono blocs laying around that I found and decide to pull 'out of the closet'. Throughout July I will finish building building them to pair up with my custom OB-7 Deluxe speakers.

 I started on these about 2 years ago and put them aside for a while as I was too busy to work on them. Now that I am building another pair of these amps for a customer, I figured I would work on both pair together on the bench.

 The demo pair will be custom built using a combination of Audio Note copper foil and SoniCap Platinum Teflon for the coupling positions. A completely rebuilt power supply and obviously all the circuit resistors will be upgraded. The chassis is 3/4" Bubinga. The amps will be fed by our new Musica Bella Musicale phono preamp.

 I hope to have them done early August and eager to hear them paired up with the OB-7 speakers I have become so fond of over the past several months :drool: