DIY Amp Lab

SV811-10 Single-Ended Power Amplifier Pt.2

6.5 W Output from a Russian Directly Heated Triode, Driven by a Cathode Follower and Operated in Class A2, Designed and Built by Katsu Nagashima

Jun 6 • MJ AUDIO TECHNOLOGY

SV811-10 Single-Ended Power Amplifier Pt.1

6.5 W Output from a Russian Directly Heated Triode, Driven by a Cathode Follower and Operated in Class A2, Designed and Built by Katsu Nagashima

Jun 3 • MJ AUDIO TECHNOLOGY

8045G Single-Ended Direct-Coupled Power Amplifier Pt.2

Stable Operation Achieved with a Dual-Power-Supply Configuration, Designed and Built by Susumu Soya

May 16 • MJ AUDIO TECHNOLOGY

8045G Single-Ended Direct-Coupled Power Amplifier Pt.1

Stable Operation Achieved with a Dual-Power-Supply Configuration, Designed and Built by Susumu Soya

May 13 • MJ AUDIO TECHNOLOGY

Phono Equalizer Amplifier Dedicated to the DS-E3 Optical Cartridge Pt.2

Challenging the Latest Devices with a Vacuum-Tube Circuit by Hiroshi Ueno

May 9 • MJ AUDIO TECHNOLOGY

Phono Equalizer Amplifier Dedicated to the DS-E3 Optical Cartridge Pt.1

Challenging the Latest Devices with a Vacuum-Tube Circuit by Hiroshi Ueno

May 6 • MJ AUDIO TECHNOLOGY

6C33C-B High-Power DC Amplifier Pt.3 【DC Amplifier Series】

Input stage: 437A, C3g differential amplifier, Output stage: 6C33C-B SEPP, 8 Ω load output 66 W × 2, Designed and Built by Kaneta Akihiko

Apr 22 • MJ AUDIO TECHNOLOGY

GM70 Single Monaural Power Amplifier Pt.2

A Large Russian Transmitting Tube Driven in Class A2, Designed and Built by Susumu Soya

Mar 28 • MJ AUDIO TECHNOLOGY

GM70 Single Monaural Power Amplifier Pt.1

A Large Russian Transmitting Tube Driven in Class A2, Designed and Built by Susumu Soya

Mar 25 • MJ AUDIO TECHNOLOGY

ECL805 Push-Pull Power Amplifier Pt.2

Designed for Flexible Tube Rolling, with Triode/UL Connection Switching, Designed and Built by Katsu Nagashima

Mar 21 • MJ AUDIO TECHNOLOGY

ECL805 Push-Pull Power Amplifier Pt.1

Designed for Flexible Tube Rolling, with Triode/UL Connection Switching, Designed and Built by Katsu Nagashima

Mar 18 • MJ AUDIO TECHNOLOGY

16A8 Single-Ended Power Amplifier Pt.2

A design that keeps costs down while bringing out the full capability of 6BM8-family composite tubes, Designed and Built by Hiroshi Ueno

Mar 7 • MJ AUDIO TECHNOLOGY

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