Pure Sound A30-R Line Integrated Amplifier

The original A30 was in successfully in production for 13 years, testament to a design that was ‘right’. The new ‘R’ version simply evolves the recipe. So the core design, with its triode 6N8P (a 6SN7 equivalent) and 6N9P (a 6SL7 equivalent) for input and phase splitting duties feeding 6550 output valves in class A push pull (switchable between Triode and Ultralinear remains unchanged. A new output transformer is used, with improved lamination material and revised winding techniques which results in wider bandwidth, output remains at 30 watts in Ultra linear setting. Two mains transformers replace the original single one, so now the filament supplies are run separately from the HT supply, this helps lower the running temperature. The two valve rectifiers (5Z3P/5U4G equivalents) and choke smoothing remains unchanged.

It features auto bias so there’s no need to make any adjustments when changing output valves and it uses high quality parts in the signal path. A remote control of volume and muting adds some additional convenience, and the inclusion of an extra input (it has 4 line level inputs) makes it even more flexible. A valve cage is included, as pictured.