Видео с ютуба 12At7

12at7 vs 12ax7. Сравнение звучания радиоламп.

Mesa Boogie Mark V 25 : SPAX7 & 12AT7

17 Guitar Preamp TUBES Comparison - Mullard, JJ, TAD, Philips, EHX, TUNG-SOL,

(プリ管比較）Orange Micro Terror ECC83 VS 12AX7 VS 12AT7 VS 12AY7 VS 12AU7

１２ＡT７真空管単段パワーアンプ設計と製作（第10回：プッシュプル編）

Reverb Tube Test in Mark IV-A | 12AT7 -vs- 12AX7

12AX7 vs. 12AT7 in V1 and V2: Distortion/gain comparison

JJ ECC81

Ламповый Yaqin MS-300C на новых Shuguang 12at7

Amplifier Tubes - JAN-Philips 12AT7WC

12AT7 phase inverters shootout!!!

Marshall Phase Inverter Tube Comparison

Upscale Audio's Kevin Deal reviews the Mullard 12AT7 / CV4024

Testing Fender Blues Jr Modified !! Celestion Greenback and 12AT7 with Gibson Les Paul

Alteração de Válvulas - 12AX7, 12AT7 e 12AU7

Upscale Audio's Kevin Deal reviews the Mullard 12AT7 / M8162 / CV4024

pre 12at7 test - rumore

V2 Tube Test in 'Salvage' Amp: Ruby 12AX7 vs GE 12AT7

Upscale Audio's Kevin Deal reviews the Mullard 12AT7 / ECC81

Mullard 12AT7WA / CV4024 Tube