JBH Wada Shigeho Style 12ax7 Tube Preamplifier HIFI EXQUIS finished ECC83 preamp or DIY SET JBHWSPRE
Description
Finished No bluetoot :option is the finished assembled tube amplifier with tube but without bluetooth module(Welcome to our shop. This machine is in stock in France and if customers in Western Europe wish to purchase this product, they will receive it soon.)
Finished With blueto:option is the finished assembled tube amplifier with tube and also with bluetooth 5.0 module;
DIY Set No bluetooth:option is just a DIY set of all components chassis and all tube , but it's not a finished assembled product for DIY use case, it's without bluetooth module;
DIY Set With bluetoot: option is just a DIY set of all components chassis , all tube bluetooth 5.0 module, but it's not a finished assembled product for DIY use case;
This pre-amplifier is an improved version based on the famous Wada Shigeho's Style Electric circuit, which was introduced by Wada Shigeho in the early 1960s and delivered excellent performance. Regarding the Wada Shigeho's Style Electric circuit, it not only retains the good features of the Marantz 7 but also exhibits superior characteristics in terms of dynamic response, high/low-frequency response, resolution, and signal-to-noise ratio compared to the Marantz 7. Additionally, apart from the aforementioned features, it is not inferior to the Marantz 7 in terms of sound stage and airy feeling.
Product characteristics :
The reference to Wada Shigeho's circuit aims to enhance and adjust the peripheral component parameters of the bile duct for different uses, maximizing the strengths of the bile duct. This allows the machine to deliver outstanding performance in various scenarios. Developed by Japanese and Shigeru in the early 1960s, the circuit exhibits excellent performance. It preserves the mellow and full musical taste characteristics of the Marantz 7, while surpassing it in terms of dynamics, transients, high-frequency response, power analysis, and signal-to-noise ratio. Additionally, in the sound field, it maintains transparency and fluency comparable to Marantz 7.(HIFI EXQUIS)
Technical Specification:
Frequency Response: 12hz-50kHz (- 0.5dB)
Signal to noise ratio: 94db
2x 12ax7 , 2x12au7 preamp tube, 2x6z4 rectifier
Input voltage: costomize for 110-240V
Output voltage: 2V(RMS THD＜0.03%)
Input Sensitivity: 400mV
Input Impedance: 200K ohm
Output Impedance:600 ohm
Power Consumption :30W
Dimension: 320*170*120mm
Net weight :3.5 kg
Voltage amplifier level: about 10 times
Product Features
Japanese original ALPS 16 type axial length of 15mm 100k double potentiometer,
Switch is a Taiwan-invested factory production of 2*6, they can adjust the positioning mouth into four files to use.
Chassis dimensions: 32 x 17 x 12cm, total height is about 12cm, recommande placed space of the machine, the minimum height requirement of not less than 15cm
Use of all AC power supply in parallel to the three 12ax7
0.8mm brushed stainless steel plates using CNC punching chassis
Power transformers using H250 0.35 core piece 76 * 40 secondary filament winding especially with double shield grounding line is yellow-green line outle
High Voltage 270v * 2 using the 6z5p bile Rectifier.
Amplification circuit using scaffolding of welding, power use PCB
Gold-plated RCA Block, 4 inputs, one set of outputs.
AC power supply: AC 100v - 120v or 220v - 240v
Use WIMA MKP10 0.1uf capacitors, 0.39u ERO, IT 2.2uf etc. audio-specific capacitors.
We can offer english DIY manual after when you made order
HIFI EXQUIS offer you a good packing for this pre-amplifier
Bottom plate is included
Praises from customers:
