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: