庫存狀態: 有現貨
$HKD36,800.00

TUBE CLASS A BALANCED AMPLIFIER

Output power: 100W+100W (8Ω)/200W+200W (4Ω)


Class A output power: 100W+100W (8Ω)


Frequency response: 20Hz-20KHz ± 0.5dB


Low level input sensitivity: 150mV


High level input sensitivity: 400mV (LINE 5 gear)


Harmonic distortion: ≤0.1% (1kHz 1W)


Signal to noise ratio: >90dB (wideband)


Input positive resistance: 47kΩ


Dimensions: 427×212×482mm


Weight: 30kg






• The pre-amplification part adopts the ECC803 tube common-cathode amplifier circuit, and the ECC802 tube serves as the SRPP driving amplifier, which results in beautiful sound and great dynamic performance;


• It adopts a hybrid precision high-voltage stabilized power supply. The voltage stability is extremely high, while the AC ripple coefficient is extremely low;


• The power amplifier part is made up of Toshiba high-power transistors to form a 0dB current amplifier circuit. The sound is warm and powerful. It can easily drive a variety of advanced brand speakers;


• The tube circuit cross-connect capacitors are German MCap brand oil-immersed capacitors and German WIMA brand MKP series high-end audio special capacitors;


  The filter capacitor used in the transistor power amplifier power supply is the Japanese ELNA brand FORAUDIO series 10000uf/50v specification;


• The volume control adopts the electronic volume control chip CS3310 made by American Crystal Company, which controls the error level between two channels within 0.5dB;


• The toroidal high-power transformer is filled with epoxy resin with a shielding box, which effectively reduces the vibration and noise interference;


• The AC power sockets are Japanese Furutech gold-plated, and the built-in fuse is Swiss Schurter brand;


• Two channels independently use special audio filter capacitors and rectifiers, with a total capacity of up to 120,000 microfarads and 32 high-power transistors to form 100W (8Ω) pure Class A output power per channel;


• the speaker terminal uses German WBT brand products, while the balanced signal input terminal uses Swiss Nutrick brand products;


• Another function of A-238II is as an independent power amplifier. You can use the LINE5 high-level signal input terminal to connect to other pre-amplifier;


• A-238 introduces the CPU full-function control and data information screen display mode; The full-function infrared remote control system is specially set up for users.