this is the Upgraded version of the shengya A-238, Now the parts have upgraded Feature: The pre-amplification part adopts imported ECC83 tube common cathode type amplifying circuit, and imported ECC82 tube acts as SRPP for driving amplification; Adopt hybrid precision high-voltage stabilized power supply of electron tube and transistor, the voltage stability is extremely high; the power amplifier is composed of Japan Toshiba high-power transistor to form a 0dB current amplifier circuit; The...

Technical Parameters: 1. Fiber, copper shaft, balanced digital digital input sampling frequency range: 44.1, 48, 88.2, 96, 192 kHz 2. USB digital input sampling frequency range: 32 Bit / 384 kHz 3. Supported formats: MP3, WMA, AAC, AAC+, ALAC, FLAC, APE, WAV, DSD64, DSD 128, DSD 256 4. Frequency response: 20Hz-20kHz±0.5dB 5. Analog output voltage: 2.5V 6. Dynamic range: ≥100dB 7. Signal to noise ratio: >95dB 8. Harmonic distortion: < 0.004% 9. Channel separation: >100dB 10....

Feature: • Bluetooth wireless digital audio connection; digital or analog audio connection; • With optical fiber, coaxial, USB digital signal input interface, and with 24Bit / 192K digital-to-analog conversion accuracy, supports DSD256 format; • There is also a set of analog signal balanced input ports; • The pre-amplifier part uses ECC83 tube common cathode type amplifying circuit, and ECC88 tube acts as SRPP for buffer amplification; • Hybrid high-precision voltage...

Feature: • Bluetooth wireless digital audio connection with mobile phones, laptops, tablets and other devices. It can also be connected with iPod, iPhone, i Pad, CD, DVD, TV high-definition box, digital or analog audio; • Attached with optical fiber / coaxial digital signal input interface, and with 24Bit / 192KHz digital-to-analog conversion accuracy; • The pre-amplification part adopts the common cathode type amplifying circuit of the electron tube, and the electron tube acts...

This machine has a new external output terminal; its set of audio signal input terminals (LINE 5) is used to externally connect other preamplifier audio output terminals, so that this unit can be used as a stereo pure rear stage.  A 203GS Class A amplifier represents the comprehensive performance of our company's experience in designing and manufacturing transistor power amplifiers for many years. It adopts the fully balanced amplifier circuit recognized by many international audio product...

1.The machine has a transistor audio output and tube audio output two output options; to facilitate the user according to the different audio equipment or listening preferences to choose the appropriate audio output mode. Transistor audio output; deep deep and powerful, wide sound field, dynamic and powerful. Tube audio output; beautiful sound performance sounds, pure thick natural, slim and sweet. Tube and transistor hybrid precision high-voltage power supply, high voltage stability. AC ripple...

Feature: • Adopt independent mono balanced amplification principle structure; can set the output status of category A or A and B • The audio signal input stage is amplified by the electron tube, and the final stage is composed of 24 high-power transistors. 0dB power output stage • The power supply part is composed of a 1500W toroidal transformer and 160,000 microfarad special electrolytic capacitors • Unbalanced signal input terminals and speaker connection terminals are...

1. The larger part of the core accumulated years of experience in the development of DC combined gallstone developed hybrid amplifier, so that you would to an unprecedented gallstone mixed ultimate tone.  2. Dual-mono fully balanced in amplifier design, two channels are completely independent; in order to reduce dynamic crosstalk per channel with a power transformer and special transformer shielded box to eliminate power supply noise interference.  3. Eight Russian-made enthusiast...

1. The use of a separate two-channel balanced transmission amplifier structure, effectively eliminating dynamic crosstalk problems.  2. The audio signal from the input circuit composed of FET cascode differential amplifier, a differential voltage for amplification transistor famous, the final stage 24 by the power transistor power output stage composed of a strong, easy to push low as 2 ohms speaker impedance.  3. Power supply in part by the 1500W toroidal transformer dedicated stereo...

Feature: • Adopt independent mono balanced amplification principle structure; can set the output status of category A or A and B • The audio signal input stage is amplified by the electronic tube, and the final stage is composed of 24 high-power transistors to form a powerful power output stage • The power supply part is composed of a 1500W toroidal transformer and 120,000 microfarad electrolytic capacitors • Unbalanced signal input terminals and speaker connection terminals...