Tennis, there's some good stuff about your inquiry on the McIntosh forum at audiokarma.com.
Neil
Neil
6550s vs kt88s for a mac 275 amp
i will be receiving a mac 275 mark 5 from a dealer in about 10 days. i expect the amp to be equipped with 4 kt88s.
while not my favorite output tube, it has its strengths.
i am wondering about purchasing 4 nos 6550s. i have no idea what to expect with this tube.
are there any reasonably priced which are more mellow in the treble, perhaps also a bit richer in the lower mids and slightly rolled in the treble ?
thanks
while not my favorite output tube, it has its strengths.
i am wondering about purchasing 4 nos 6550s. i have no idea what to expect with this tube.
are there any reasonably priced which are more mellow in the treble, perhaps also a bit richer in the lower mids and slightly rolled in the treble ?
thanks
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- 8 posts total
Mrtennis: I am not sure if you would consider these old enough to be NOS. I have been using these 6550's in my Prima Luna Prologue 2 integrated and Prologue 5 power amplifiers. Prefer these to KT88's and EL34's. SED Winged C 6550 tubes. Regards, Rich |
If the sound you're seeking in your preamp is what you want from your amps, the only 6550 I'd suggest would be NOS Tung-Sols. And other than that, I'd suggest getting NOS Gold Lion/Gold Monarch/GEC KT88s. As a general rule, the 6550s will have tighter bass, but a leaner midrange, than the KT88s; not sure you'd like that sound, from your other posts. The Svetlanas that Rich suggests are a current 6550 that appraoches the sound of the old Tung Sols, and may well be richer in the mids than current KT88s, I haven't really listened to the new ones. |
- 8 posts total