SiO2 Amplifier

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Preamplifier 6J5G CCS -> 6L6G CCS Cathode follower -> 5K:600R + KT88 LM317T Hybrid high voltage regulator
29/04/2026

Preamplifier 6J5G CCS -> 6L6G CCS Cathode follower -> 5K:600R + KT88 LM317T Hybrid high voltage regulator

2A3 15W Push Pull
03/02/2026

2A3 15W Push Pull

03/02/2026

100TH on Air

100TH SE Amplifier is retouched and heated up in my workshop.
01/02/2024

100TH SE Amplifier is retouched and heated up in my workshop.

6KVA 240V to 220V Isolation Transformer
17/01/2024

6KVA 240V to 220V Isolation Transformer

X2.5 6J5 Interstage Preamplifier using battery bias and 10K:150R output transformer
18/12/2023

X2.5 6J5 Interstage Preamplifier using battery bias and 10K:150R output transformer

ECC85 EL34 PSE integrated amplifier design and fabrication. High tension and heater are powered by 250v and 6.3V regula...
25/09/2021

ECC85 EL34 PSE integrated amplifier design and fabrication. High tension and heater are powered by 250v and 6.3V regulators respectively. Output power is 20W………

https://vimeo.com/334126730
04/05/2019

https://vimeo.com/334126730

This is "Deltalite 2515 plus Radian 475PB Open Baffle" by Walker Yip on Vimeo, the home for high quality videos and the people who love them.

18/03/2019

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Hong Kong

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96770541

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