The Ref 10 seems to be easier now on the 6550's in the PS.
The manual recommends tube replacement at approximately 4,000 hrs of use.
( Ref Anniversary- 2000 hrs for the 6550, 4,000 hrs for the 6H30 )
However they emphasize 8 to 10 inches of clearance above the units.
__________________
Source:Michell Gyro, Garrard 301/401, Spirit of 75, Lenco, SME 309/IV.Vi, 3009 & 3012, Dennesen air bearing, Odyssey RP1 9' & 12', Fidelity Research fr-24, Zyx 4D/Bloom, Lyra Skala/Kleos, Denon 103/103r soundsmith OCL, Fidelity research MC201 Preamp/amp:Audio Research Ref Ann, Ref Phono 2se, PH3, SP-10, D-250, ARC ST-70C3, Pilot sa-232/260, Dynaco Mk 2, Quad II Speakers:Proac, Sonus Faber, Harbeth, Rogers, Spendor.
Others: Conrad Johnson, Unison Research, Audionote.
|