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wooaudio.com

[OPEN-BOX] Like new, complete with box and accessories One (1) at this price. ships next day FREE shipping within CONUS Have questions? Contact us. Specials are on a first com e basis. Re turns are not accepted.

idealinnovations.biz

custom built vacuum tube audio amplifiers preamps and equipment, low cost, high quality, high end vacuum tube audio, vacuum tube amplifiers, custom built tube amps, monoblock amps, dht tube amplifiers

sophiaelectric.com

As someone who has extensively experimented with vacuum tube rolling in the Schiit Freya+ preamplifier, I was initially skeptical about whether a premium valve such as the Sophia Electric Blue Glass 6SN7 would provide meaningful improvement over established alternatives like the Tung-Sol GTBs and various vintage options. However, after several weeks of critical listening, I can state without hesitation that these valves have indeed elevated the performance of my system in ways both tangible and musically satisfying.The valves are currently installed in the gain stage of the Freya+, paired with Tung-Sol 6SN7 GTBs in the buffer stage. The remainder of my system includes Class D Audio’s matched GaN monoblock amplifiers (using the balanced input), Tellurium Q Black II speaker cables, and KEF R11 Meta loudspeakers — a highly revealing signal path. Any change to upstream components is readily exposed. What has stood out for me is a further enhancement to the sense of dimensionality and space. These valves deliver a level of image depth and air that had previously eluded my system. Instrument placement within the soundstage has become more precise, with decay and spatial cues preserved beautifully. There is a richness and tonal density to midrange content — particularly noticeable on vocals and acoustic instruments — that imparts a sense of “being there,” without ever tipping into warmth-for-warmth’s sake.The Sophia Electric Blue Glass 6SN7 valves have delivered a level of refinement I had not anticipated, particularly in a system already performing at a high level. They have proven to be a brilliant match with the Freya+ and my GaN-based amplification. System Context for Reference: Source: Oppo UDP-203 disc player, Rega RP3, Rega RP1, AURALiC Aries G1, Denafrips Enyo 15th DAC Preamplifier: Schiit Freya+ (Sophia Electric Blue Glass 6SN7 in gain stage) Power Amplification: Class D Audio Premium GaN Monoblocks (Balanced) but also occasionally use Rega elicit-r, heavily modif

truvibe.co.uk

uk manufacturer of custom valve guitar amplifiers

unisonresearch.com

Many of our loyal Unison Research customers requested that we create a tube amplifier capable of output power well above all our previous achievements. To