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Tube rolling and SAC Glowmaster KT88?

I just received my brand spanking new SAC Glowmaster KT88 today and am mightily impressed even straight out of the box. I fully intend to settle down and enjoy it for the time being but was wondering if anyone out there had tried rolling the stock tubes out for something else and if so with what effect?
Thanks in advance for your thoughts.

Copland CDA822 (Trichord clock 4 & NC PSU) SAP Relaxa 1
Homebrew Origin Live Ultra Turntable, OL Ultra controller, DC200 motor, OL Silver Mk2 arm, Ortofon Kontrapunkt B, Whest PS.20 & MSU.20, Townshend Audio 3D Seismic Sink
Chord DAC64 Mk 2
Audio Experience A2 SE (Mullard CV4024s & E182CCs)
SAC Glowmaster KT88
Northcreek Pegasus Standmounted speakers
Partington Ultima stands
Zu Audio Libtec
Interconnects Zu Audio Varial XLR, Artisan Cables XLR, custom solid silver RCA cables
Power cables Missing Link Cryo Reference & Zu Audio Bok
128x128mghf
jfh
13 posts
 
I just  received the new version of the Glowmaster with a pcb and auto bias circuit.  I must say it is a glorious sounding amp.  It pulls you into the music, revealing and alive.  Likely the best amp I have owned.  I will comment that it has a high noise floor, there is a hum coming from the amp, tolerable yes, but it is there and noticable. 
Has anyone else experienced this?  Solutions?  Different tubes?




dentdog's avatar
dentdog
480 posts
 
I'm looking at this company's GM70 PSET amp. The price is right but I would have a huge problem laying out that amount of money and having any noise,[hum] as part of the deal. 
The PSETs are mono blocks and along with the purchase I may go for their balanced transformers. I think this might reduce any tendency for hum. IDK
rothwea
45 posts
 
Glowmaster = great sound, but reliability could be better
dentdog's avatar
dentdog
480 posts
 
I have been seriously looking at SAC, so this is disconcerting. Kittipol seems straight up and the balanced Glowmaster fits right in with my system. When you say great sound, what are it's strengths?
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