The pure sound is class A.
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Well I couldn't get away with the Rega Brio latest model either! Sent it back in preference of my old JVC ax-01.
I wonder is it because my Wharfedale 10.1 speakers are not up to the task?? You'd think an upgrade in amp to to level of either a pure sound a10 or a rega brio would be sufficient to hear a benefit.
The pure sound was definitely more refined but the Rega was the same but with less punch.
Suppose the Rega is based off a 70s design anyway I've heard so there can't have been much in it compared to the old JVC.
Any recommendations on the path to an upgrade would be appreciated.
I'm currently awaiting an at33ptg ii to upgrade my cartridge. It was that or get some new speakers. I think that is next. Was thinking about quad s2's the frequency response looks like it measures similar but just a tad wider than the wharfedales. I need to stick to standmount sized speakers due to space.
Any ideas on speakers for around 500. I generally find if a speaker review mentions bright or careful partnering I find they make my teeth hurt!
I have the JVC AX-01 in my amp collection. Only about 30wpc I guess. The circuit design is a scaled-down version of the JVC Super A amp ($1200). Also used in the JVC RS-33 receiver. I had that one in use too! I remember playing DSOTM (CD) with the RS-33 driving the JBL 640 floor-standers for my cousin and being quite impressed! I assume the poorer bass response you noted was speaker- dependant due to the low power of the AX-01. I thought the bass from the 640's and the RS-33 (same circuit) was fine, something that the DSOTM CD would show up! So you may have to search for a compatible speaker. Hint: JBL 640's or the 610's stand-mounts.
The Pure Sound has a high output impedance - like most tube amps. Something like 2 or more ohms! This makes the amp badly speaker dependant and problematic to match with. Changing the tubes will do nothing to fix this! Plus the low power means easily overdriving the Pure Sound. Keep the AX-01 and get something with higher efficiency like JBL's.