Recent content by OzBrit Audio

Yes I know what you mean Been listening to the SE400's in my test rig for the last few weeks now and the sound signature would be very hard to give up. Switching permanently back to other amplifiers, for example the NCC220's, SE200's or the internal amplifiers in the Naim Atom (which...

Really interesting Mike I think I posted earlier in the piece about using a tube pre...😁 Your thinking follows others that I have read about when evaluating amplifiers such as the Purifi Class D, those from Benchmark and indeed now your experiences with the Modulus 686. These amplifiers that...

Mike I would go 3300uF L 3300uF That should be fine. And I think thats the sort of thing Avondale use on their front end power supplies. The draw on the front end is less than 30 ma on the NCC300, closer to 15ma. If your going to use an Avondale Cap board you could try 2 and then 3 caps per...

The second one, pin3 floating using mogami cables. I tried shielding both sides and ended up connecting on the source XLR side. These cables are short less than a metre But in the end I use some Chinese clone Cardas Cross cables which are far superior to the Mogami ones I made up.

Why do you say that. A short cable run and an extra layer of electronics to colour the signal?

Martin So are you a fan of using gyrators in the Naim pre amps. Would you recommend for my NAC 42.5 (when I finally get round to putting it in service)? I intend to get the Avondale shunt supply board but wondering if it's worthwhile filtering the power supply lines as well?

And of course balanced xlr to unbalanced xlr is also a viable option. So XLR sockets on the pre straight into the avondale amplifier boards. Make sure the the XLR cable is correctly earthed of course for this configuration to minimise noise transfer. I use this on my Atom HE. On the Atom...

Mike a balanced input transformer may be the way to. I don't think these take anything away from the sonic footprint There was a review on an English made passive preamp which was basically a resistor ladder for volume plus a transformer. One thing the reviewer noted was that the pre took...

I notice those gyrators have more than one semiconductor device, a bit more than a single transistor cap multiplier. What's in front of the transistor cap multiplier?

Hi Martin I don't disagree with any of the above regarding HF noise. But to make things a little more complicated my minicap6's don't have the inductors. Originally I had them in but in the end took them out as I felt there was in impact on dynamics with them in. I think there was a thread...

Well interesting discussion here I started with observing the Thomas and Stereo amplifier recently released that had 200000uf Capacitor banks. This has been very well reviewed, particularly in the bass region Feedback seems split between a smaller singular capacitor bank and much larger...

One thing there does seem a consensus with is several smaller caps rather than one big one

Well with 3 farads your well catered for in the event of a power cut :D I think with the NAP500 that 120000uf is split over 4 seperate amps so thats 15000uf per rail. Still fairly low compared with most

Class AB apparantly Interesting to hear your experiences. Smaller rail capacitances with massive toroids is the Naim approach. What I'm listening to now are Avondale SE400's which I'm 'running in' on a test rig. That has single 22000uf with standard 35A bridges. I'm going to try multiple...

Martin I posted this thread to generate discussion on sonic performance v size of the capacitor bank supply not to comment on the said marketing video. I did say I wasn't endorsing this amplifier one way or other I just noted the design uses large capacitor banks and many people seem to like...