Wada Shigeru Circuit ECC82 12AX7 Tube Preamplifier 6Z4 Rectificat Vacuum Tube Preamp
Amplifier Audio Handmade Weld
The finished machine adopts PCB board welding
Supporting vacuum tube Shuguang 6z4 * 2, Shuguang 12ax7B * 2,
PSVANE ECC82*2
Introduction to Hetian Dan Front Stage Circuit: The circuit has undergone multiple modifications. Hetian Mao's Front Stage is composed of a highly stable high gain double triple transistor, which forms a two-stage voltage amplifier. With just this transistor, the signal can be amplified by about 10 times and has high sensitivity; Its rear stage is also composed of the well-known and high-performance dual transistor 12AU7, forming an emitter follower. The purpose of this stage is not voltage amplification, but it has a very good amplification effect on current. The front-end designed in this way is very reasonable, with high sensitivity and excellent load capacity. No matter what kind of back-end is used, it is flexible and fully functional. After multiple tests, trial listening, and modifications, all were finalized using pure manual point-to-point welding.
Those familiar with the Hetian Maoshi Gallbladder are familiar with its prominent vocal features and excellent mid-range. Especially when playing vocals, there is a strong emotional flavor that comes out, and the taste of courage is very strong. It not only adds charm to playing vocals, but also has a unique style when playing some sketch music, such as indoor recorded violin, saxophone, jazz and other music
Product features: Circuit: Adopting Hetian original improved circuit; Excellent shed design, reasonable, regular, and symmetrical device layout, and strict adherence to grounding wiring.
Power transformer 76 * 40 H250 0.35 pieces
Potentiometer (or Japanese original ALPS 16 Type A dedicated audio potentiometer).
Product parameters
Input sensitivity: 400mV
Output voltage: 2V (RMS THD<0.03%)
Signal to noise ratio: 94DB
Frequency response: 12Hz-50KHz (-0.5DB)
Input impedance: 200Kohm
Output impedance: 600ohm
Input voltage: 220V (optional 100V, 110V, 230V, 240V, etc.) Please specify what voltage is required before purchasing
Power consumption of the whole machine: 30W
Volume: 320 * 170 * Gallbladder height 120mm (W-D-H)
Weight 4kg
