GZHYAJIN Ear834 DIY усилитель для домашнего кинотеатра

Product introduction:

The original Lehmann circuit, the circuit is retained without any increase or decrease, and the original version is the same, with double recoverable insurance, with gain selection, with spare positive and negative power input, with 2 6.35MM amp socket output, with rear audio output ( Used at the current level), only the component mounting holes have been improved, making it more flexible to install various fever components and more convenient for DIY production

Board materials: Filtering uses Japanese Chemical Black King Kong 5600UF, South Korea's Sanei small electrolysis, provides enough pure power for the board, audio output coupling capacitors use Swedish RIFA transparent film fever coupling, and a large number of audio loops use Swedish RIFA electrodeless capacitors And German Siemens capacitors, original BD139 BD140 paired tube output. The potentiometer adopts Japanese original fever ALSP A100K double potentiometer, which is durable.

The power supply voltage stabilizer adopts LM317 and LM337, the effect of voltage stabilization is better than that of the 78 series, and the voltage stabilizing current is larger.

The op amp IC uses TI Texas Instruments NE5532, a cost-effective op amp. (It can also be upgraded to more OPA2604, AD827 and other fever op amps)

Actual audition: each frequency point is well played, transparent, bass is strong but not chaotic, and durable, which may be due to the addition of large-capacity filter capacitors and Swedish RIFA capacitors

I won't say too much, you can feel it yourself

Board size: 106MM*148MM

Working voltage: AC 15V-0-15V, a set of spare input DC15V-0-15V

Matching transformer (please contact me)

Applicable headphone impedance: 32 ohms-600 ohms

Frequency response: 20HZ-20KHZ

Product Image:

For matching transformers, please contact the seller!!

Transformer picture:

Introduction to the original Lehmann:

The Lehmann BLACK CUBE LINEAR headphone amplifier is originally made in Germany, and the German Sennheiser HD650 or HD600 headphones, which are also made in Ireland, are known as classics. In the eyes of many high-end earphone enthusiasts, apart from having a pair of outstanding performance In addition to the headphones, a high-level headphone amplifier is also indispensable, and the Lehmann headphone amplifier in Germany is one of the high-end headphone amplifiers that we can buy in the domestic market. Lehmann's BLACK CUBE LINEAR The price of amps in the European market is as high as 700 euros, which is regarded by many enthusiasts as the Rolls Royce of amps.