M1 (HI-END) pre-amplifier power amplifier board, magnification: 6 times, frequency response: 0-100KHz ±1dB, distortion <0.01%

M1 (HI-END) preamplifier finished board, enthusiast preamplifier board, magnification: 6 times, frequency response: 0-100KHz

FS-N2A 6N2 tube pre-amplifier, magnification: 5 times, total harmonic distortion: 0.065%, frequency response: 10-20kHz

6DJ8/6N11/12AX7 gallstone mixed 1W+1W/8Ω single-ended class A headphone amplifier board, frequency response 10-100Khz (+-1db)

Improved X10-D audio fax 6DJ8 version tube buffer board LG-220, distortion 0.008%, frequency response 10Hz ～ 100KHz ± 0.2db

6n11 6DJ8/ECC88 6922 Bile preamp tube tone board, balanced high and low bass, frequency response: 10HZ-100KHZ, distortion 0.2%

6N6/12AT7+6C19 tube tube amplifier headphone amplifier board, 1W+1W/8Ω, frequency response 10-100Khz (+-1db)

6N3 amplified 6C16 cathode output dual-channel front pole amplifier with wide frequency response and low distortion，8 times gain

Jensen audio transformer PT-11 10K: 10K permalloy transformer, frequency response: 10Hz--100KHz -0.2DB, 20Hz--50KHz -0.1DB

Frequency response: 20Hz-75KHz -1db Withstand voltage: 500V DC10K: 40K 2 times signal step-up amplifier audio transformer

JENSEN 10K: 10K engraved version of Permalloy transformer PT-11, frequency response 10Hz-- 100KHz -0.2DB, 20Hz--65KHz -0.1DB

4 times magnification with Japanese Temulan, UNIDA TpAs-203 signal transformer passive front stage, frequency response 30-20kHZ

Permalloy LP vinyl MC phono step-up transformer, wide frequency response low distortion player, 20 times boost finished machine

10K: 10K audio transformer Final re-enactment heron PT-11 permalloy, measured frequency response: 10Hz ~ 100KHz -0.2DB

Raphaelite 600: 12K + 12K (1: 4 + 4) Permalloy transformer, inverter transformer. Frequency response 9Hz-100KHz -1dB

10K:40K Wide Frequency Response Super Ares 2 Times Signal Boost Amplifier Audio Transformer Silicon Steel Sheet Boost Transforme

Frequency response:20Hz~52KHz -2D over-signal current 15mA 5 times boost permalloy 600Ω:15K audio signal isolation transformer

1005007929210911

Z11 material 600Ω: 600Ω audio transformer, double-sided circuit, copper-plated shield, frequency response 10Hz ～ 72KHz -1DB

New 6N8P 6SN7 CV181 tube pre-stage 6Z5P bile rectifier HIFI front, frequency response 10HZ-100KHz, distortion less than 0.2%

10K: 10K audio transformer Final re-enactment heron PT-11 permalloy, measured frequency response: 10Hz ~ 100KHz -0.2DB

10K: 10K audio transformer Final re-enactment heron PT-11 permalloy, measured frequency response: 10Hz ~ 100KHz -0.2DB

6N8P 6SN7 tube preamplifier 6Z5P bile rectifier, solid wood box hifi front bile preamp, frequency response: 10HZ-100KHZ

600 ohm 2K4 wide-band response single-ended balance transformer 2 times voltage gain, high coupling coefficient, wide frequency

For Permalloy audio signal transformer 600Ω: 15K signal 5 times boost amplification, frequency response 20Hz ～ 52KHz -2DB

For Z11 material 600Ω: 600Ω audio transformer, double-sided circuit, copper-plated shield, frequency response 10Hz ～ 72KHz -1DB

Frequency response:20Hz~52KHz -2D over-signal current 15mA 5 times boost permalloy 600Ω:15K audio signal isolation transformer

Permalloy audio transformer PT-11, frequency response: 10Hz-100KHz -0.2DB, replica Jensen 10K: 10K audio transformer

Brand new FOR ABEX test tape holder test tape level azimuth angle frequency response tape distortion tape tape speed mirror tape

Brand new FOR ABEX test tape holder test tape level azimuth angle frequency response tape distortion tape tape speed mirror tape

600 ohm 2K4 wide-band response single-ended balance transformer 2 times voltage gain, high coupling coefficient, wide frequency