The best LP vinyl MC Permalloy phono balance amplifier, MC balance phono amplifier output, fully balanced amplifier.
A phono amplifier worth listening to, Good sound, balanced output, 24 all-germanium tube direct-coupled MC vinyl phono amplifier, low distortion moving coil phono amplifier, machine code: LG-311H
All germanium tube direct coupling MCMoving coilVinyl phono amplifier, transformer balanced output, 220V power supply.
Generally, the common LP vinyl MC phono boost transformer amplifiers are mostly single-ended output. This part has a new path, from the phono boost transformer to RIAA amplification and signal amplification, all balanced signal processing, completely fully balanced signal output.
The pinnacle of the germanium tube era in the early years, simplicity is a masterpiece of beauty, MC vinyl phonograph germanium tube amplifier, connected to power amplifiers and speakers.
The method of use is as follows:Phono output--->Phono MC Phono Amplifier(That is, this machine)--->Pre-balanced amplifier--->Power amplifier--->Horn speakers.
The schematic diagram is as follows: The amplifier circuit only draws one channel, and the other channel is the same.
Today, when CD is the mainstream, preamplifiers are mostly designed for CD turntables or other "high-level output" source machines. Generally, the output of CD turntables is about 2V, but the output of the cartridge(MC moving magnet cartridge)It is only about 0.03mV up and down, so it must be amplified once to increase the output of the cartridge to a high level before it can be played back. This circuit is suitable for use by MC cartridge players!
This line inputs 20 times MC dynamic permalloy phono step-up transformer, and the line has 24 germanium transistors for balanced signal processing. The first and second stages complete the complex RIAA equalization amplification. This circuit can amplify the signal of a few millivolts of the MC cartridge to 1.5 volts for output. The front stage is equipped with a feedback bias circuit, and the second stage''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s collector-to-first-stage emitter AC negative feedback is a RIAA network. The third-stage emitter output, which is also equivalent to a buffer, can have a low output impedance. Fourth to lastThe signal is amplified and buffered, which is full of resemblance, which can bring some sweetness to your system, and the sound bottom becomes soft, elastic and thick.Therefore, any load of this amplifier has no effect on this circuit. Wide applicability.
This direct-coupled germanium tube MC amplifier is one of the excellent masterpieces of germanium tubes in the early years. It has a unique fidelity and charm. It is a perfect match with LP record players.It is worth having and choosing!
material:Double-sided PCB circuit board,Board size: 145mmX89mm, board thickness 2mm.Japan“KOA”Five-ring high-precision resistors, Japanese ELNA gold tonic capacitors,ELNA Purple Robe Blue Shell Capacitor, Imported or produced by state-owned Shanghai and other large factories such as 3AK/3AX31 in the early years, new original box stocks, precise matching, selection of magnification and uniform and straight assembly of characteristic curves. Except for boards and transistors, almost all of them are imported tonic components. The board is powered by 24-28V DC, 7920/7912 three-terminal voltage regulator, strengthened filtering and decoupling, and the routing is unique and quiet.
1200 yuan/piece for the domestic finished tube board. Domestic pipe finished machine is 2200 yuan/set. Imported tube finished board is 2200 yuan/piece. Imported pipe finished machine is 3200 yuan/set.
Affirm:The components on the finished machine board are different due to the different assembly batches. The types, brands, models, specifications and parameters of some components will be slightly different. The components and parameters on the received board shall prevail! The finished machine is tested normally. The signal transformer shields are available in green and silver gray, not to be selected.