PSU for Caiman with Pics

[MartinT]

how much did this little project cost all said and done?

It wasn't cheap, but that wasn't my goal. I wanted some fun (hadn't made an electronic project for a while) and was targetting lowest possible noise since this PSU was for a DAC.

• SuperTeddy regulator $63 (Teddy Pardo)
• Transformer, caps & other components $97 (Parts Connexion)
• Case £11 (Maplin)

Total about £95.

[leo]

Just running in the Superteddyreg

[MartinT]

Did you get one too? What do you think?

[leo]

Yes, Just the pcb and a set of j-fets, I already had most of the compents so it proved quite cheap to try.

Its certainly better than the original Teddyreg, only been on a couple of days so I'm giving it a little more time to run in, seems quite promising so far

[MartinT]

Nice one. I'll be interested in your listening findings when you get it going with the Caiman.

[leo]

Bass now seems a little warm, infact mids to lows seems to have taken on a slight syrup quality .
Could be down to the op-amp choice now though not being a good match so I'll roll in another . Think I'll stick the LM4562 back in see how it goes

[MartinT]

I may also try the LM4562 again, not really decided between them and the AD826. It's down to presentation rather than one being better than the other.

[leo]

For all its downsides I think LM4562 is possibly the best compromise IMO , for me anyway when using the STR

I really liked the AD826 before with the other PSU's but since the STR Time for some fiddling I think

[MartinT]

I can only describe the difference as the LM4562 presents large amounts of fine detail in a slightly flat stage while the AD826 presents the shape of the sound in a deeper stage. They are both fine op-amps and I would wish for a combination of both strengths.

[HighFidelityGuy]

My STR based PSU is still being run in and I'm also thinking about trying the AD826. I was wondering, have you both used a pair of AD826's and a pair of LM4562's, or have you tried combinations of the two?

Thanks.