■ Feature 1: Rediscovering the Charm of European Power Tubes – Building Four Power Amplifiers
・Driving a classic British tube with a renowned Japanese transformer, delivering 8.5W output: DA60 Transformer-Drive Single Mono Power Amplifier — Masafumi Yanagisawa
・Inspired by the Loftin-White circuit: PX25 Direct-Coupled Class A1 Power Amplifier — Susumu Soya
・A simple design compatible with 6L6, delivering 13W in Class A operation: KT66 Push-Pull Power Amplifier — Masaru Nagashima
・With driver transformer and power supply mounted on perforated epoxy boards: Clough-Connected Transformer-Drive PX4 Single Power Amplifier — Yasuo Iwamura
■ Feature 2: The Latest in Analog Audio
・Listening impressions of six new Audio-Technica AT-VM700x/500x VM cartridges
・Highlights from Analog Audio Fair 2025 and OTOTEN 2025 — Editorial Team
■ Original Sound System Projects
・Breathing new life into a legendary driver: Experimenting with Field Conversion of the Diatone P-610 [Part 1] — Hiroshi Ueno
・6C33C-B High-Power DC Amplifier: First stage 437A, C3g differential, output stage 6C33C-B SEPP, delivering 66W ×2 into 8Ω [Construction & Adjustment] — Akihiko Kaneda
・421A Mid-Power DC Amplifier: First stage 448A, C3g differential, output stage 421A SEPP, delivering 12.5W ×2 into 8Ω — Akihiko Kaneda
・Computer-Aided Amplifier Design & Construction [No.62]: Building a Multi-Amplifier System (Part 2) — Heisuke Ikeda
・High-Performance, High-Fidelity Speaker Design [No.37]: Building a Compact 2-Way Using a SEAS Magnesium Woofer — Kohei Suzuki
・Designing Compact High-Efficiency, High-Fidelity Systems [No.197] — Takahisa Ozawa
■ MJ Technical Report
・Improving sound by upgrading household AC wiring components: The Effect of Sub-Zero Treated Breakers and Wall Outlets — Chitake Inoue
・New York–Tokyo Audio Correspondence No.3: A conversation with legendary audio engineer Jean-Christophe Morisson — Devon Turnbull
・A History of Audio Manufacturers Through Hardware Evolution [No.106]: 90–100 Years of Luxman (Part 1) — Isao Shibasaki
・Accuphase C-57 Phono Equalizer & AD-60 Analog Disc Board: Circuit and implementation — Isao Shibasaki
・Measuring True Tube Characteristics with Real Data [No.3]: Considering “Emission Decline” in 211 Tubes — Maki Kubo
・Repair Diary [No.25]: Restoring Onkyo T-429 & T-437 FM/AM Tuners — Hideyuki Sakai
■ MJ Best Audio Components
MJ Zoom-Up
・Audio-Technica AT-LPA2 Turntable with MC Cartridge
・DS Audio TB-100 Optical Cartridge Dedicated Tube Phono EQ
・Fidelix SATELLITE Headshell-Integrated MC Head Amp
・Accuphase T-1300 FM Stereo Tuner
・Triode JUNONE 845SE Single-Ended Integrated Amplifier
・DALI EPIKORE 3 Three-Way Loudspeaker System
MJ Report
・Sound Base CWP-450 60Hz AC Power Supply
・Toei Transformer OPT-F5 Single-Ended Finemet-Core Output Transformer
・New Product News
...and more!!
▼Click here for details about the book▼
MJ Radio and Experiments October 2025 Fall Issue | Seibundo Shinkosha Co., Ltd. (seibundo-shinkosha.net)