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Audio Research SP9 MKII

Hello
Found two ARC SP9's for sale.  The first is the MKII with 6h23p-eb Russian 6922 tubes
the second was a SP9 that was sent back to ARC and upgraded to the MKII, it has 2-6922 Sovtek Tubes installed .

Question,  given they are both about the same price should which one would be the best one to purchase?
torchlake99
torchlake99 OP
26 posts
 
Thanks all!
initforthemusic
282 posts
 
Buy the original MK.11 with the the russian tubes. If you have a good tech. get it upraded to Mk.111 spec. Then get him to put in dual volume pots, IEC socket for audiophile Power cable, beef up the Power supply 5 times put in russian milspec OTK tubes and you will have a killer pre.
mbar8021
1 posts
 
I have an SP 9 Mk II coupled with a D130 and MMG’s. After 40 years I have tamed CD’s of their early high end stridency. It’s a lowly system but I absolutely love it; and ARC still fully supports both products. Could not be happier. 
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