Oh-m'-god--bought a pair of MA-1/3.1s thru USAudiomart.

Dec 16, 2018
28
9
3
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Phoenix, Arizona USA
#21
Congratulations on these incremental improvements!
TY, Ron.

I ran into Upscale's Brimar CV1988/6SN7GT tubes and bought a quad; Upscale has sold out of the two better (preamp) grades and have only poweramp-grade versions left.. The first quad had blacked glass and original cartons/protectors and sounded quite good in the 1st-Voltage-gain postions--maybe not quite as warm as my old Tung-Sol oval-plates but excellent none the less.

Bought six more which turned out to be two different plate styles; none had blacked glass, two had common-type rectangular-cross-section black plates, and four had curved gray plates.. I left four T-S OPs in the V1 postions, put four original-black-plate versions in the Vs 2 and '3 positions, and put the rectangular-plate pair in the V4 cathode-follower postions.. THIS combination sounds EXCELLENT and made the amps sound better than ever.
2019Feb10_Brimars_1200h.jpg


I'm now working on amppads and shelves for my equipment stand, using 3cm granite.. IF anyone is curious, see
https://www.audioasylum.com/audio/tweaks/messages/20/208063.html
for details.. Got the amppads finished yesterday and applied some sheets of Dynamat damping material to both today.
https://www.audioasylum.com/audio/tweaks/messages/20/208116.html

2019Feb09_amppads1_1500w.jpg
 
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