Cyrus 3 with PSX non-R?

[coltrane]

I wonder if the above combo can be used together, or for the Cyrus 3 it's a must that the PSX-R be used only with the amp?

 

[john dolan]

The 'non-variable' PSX-R was built in the serial number range
up to and including HBU00421 and HBE01351. All other PSX-R
products are of the 'variable' type. The 'non-variable' PSX-R is
compatible only with the Cyrus III, Discmaster, Dacmaster,
dAD 7, dAD 3 (including Q and Q24 versions)."

If its the cyrus 2 psx then it can only power the Cyrus 2.

Edit to say if you get a psxr you want to fit to a Cyrus 3 you have to open up the amp and do this for it to work

http://www.rdhworld.myzen.co.uk/smfcu/index.php?topic=267.0

 

[Robert]

The older plain PSX in the same style case as the Cyrus 1/2 cannot be used with the Cyrus 3 onwards. The original supply is an unregulated dc type on its main output - the 'R' on the later versions is for 'regulated'. The older PSX does have a secondary regulated output but thats for the PCMII CD player only.

Incidentally, when you add a PSX-R to a 3 or 7 you then have a fully regulated power amp in much the same way as the original Exposure designs or the Naim 250/135 - but the Cyrus is the better design.

 

[Bungle]

if you need a psxr i have one.

 

[sean99]

If you have an old PSX (for Cyrus 2) and you're in north America I'd be interested in buying it. PM if you ever decide to sell. thanks !