■ Feature 1: 44th MJ Technology of the Year
From the many audio products covered throughout the year in MJ Zoom Up, MJ Reports, and feature articles, we select outstanding models judged to be exceptional in both sound quality and technical achievement.
■ Feature 2: Low-Cost and Beginner-Friendly! “MT Combination Tube” Vacuum Tube Power Amplifiers
Triode–pentode combination MT tubes, which house both a triode section and a pentode section in a single envelope, have long been favored by beginners for DIY audio because they allow an amplifier to be built with just one tube.
In this feature, we introduce three diverse amplifier designs—from simple, easy-to-build sets to more experimental works that offer new ways to make full use of these triode–pentode MT tubes, many of which were mass-produced for television receivers.
・Extracting the Performance of 6BM8-Type Combination Tubes at Low Cost:
16A8 Single-Ended Power Amplifier — Hiroshi Ueno
・Pursuing High Sound Quality with Iron-Core Amorphous Output Transformers:
6BM8 Push-Pull Power Amplifier — Yasuo Iwamura
・Flexible Tube Selection with Triode / UL Switching: ECL805 Push-Pull Power Amplifier — Masaru Nagashima
■ ORIGINAL SOUND SYSTEM DESIGNS
・Dual-Cartridge Preamplifier for Optical and MC Cartridges — Akihiko Kaneda
・Large Russian Transmitting Tube Driven in Class A2: GM70 Single-Ended Monoblock Power Amplifier — Susumu Soya
・Computer-Aided Audio Amplifier Design & Construction [Part 63]:
Building a Multi-Amplifier System (3) — Heisuke Ikeda
・High-Performance, High-Sound-Quality Speaker Construction Based on Modern Measurement & Design [Part 38]:Compact 2-Way Loudspeaker Using SEAS Magnesium Woofer (3): Design and Implementation of the Crossover Network — Kohei Suzuki
・Designing and Building Small Loudspeakers for High Efficiency and High Sound Quality [Part 198] — Takahisa Ozawa
■ AUDIO TECHNOLOGY
・New York–Tokyo Audio Correspondence No. 4:
The Ever-Turning Wheel of Time — Development of the ON2 Horn Speaker and the ON Series, Created in Collaboration with Norwegian Manufacturer NNNN
— Devon Turnbull
・History of Audio Manufacturers Through the Evolution of Hardware [Part 107]:
Luxman’s 90–100 Year Journey (2) — Digital Audio Equipment
— Isao Shibasaki
・Marantz 10-Series Flagship Models:
Circuit and Implementation Technologies of MODEL 10, SACD 10, and LINK 10n
— Isao Shibasaki
・Understanding True Characteristics Through Actual Measurements:
Measuring Vacuum Tube Characteristics (4) — Screen-Grid Current of the EL34 in Triode Connection
— Maki Kubo
・Restoring Junk to Practical Equipment — Audio Equipment Repair Diary [Part 26]:
Maintenance of the Victor TD-V711 Cassette Deck
— Hideyuki Sakai
■ MJ ZOOM UP
・Accuphase C-3900S — Balanced Control Amplifier
・Luxman D-100 CENTENNIAL — SACD Player with 32-bit DAC
・Accuphase DP-570S — SACD Player with Quadruple Parallel DAC Configuration
・Aurorasound HFSA-02 — EL34 Push-Pull Integrated Amplifier
・Yamamoto Sound Craft A-011SS — 2A3 Single-Ended Power Amplifier
・Acoustic Revive MC-1 — PC-TripleC/EX Wound MC Cartridge
■ REPORTS
・Acoustic Revive — LAN-QUADRANT-TripleC-WB LAN Cable
・Zonotone — Granster AC-2000 Line Cable
・Furutech — Speakerflux NCF-05 Speaker Cable
・AudioQuest — Brave Heart Speaker Cable
・Furutech — Origin Power NCF (R) Power Cable
・Audio-Technica — AT33xMLB, AT33xMLD, AT33xEN PCOCC-Wound MC Cartridges
・PCB Ordered from PCBWay — Evaluating the Sonic Differences Between Gold Plating and Solder-Level Finish
・New Product News
■AUDIO & SOFTWARE GUIDE
・MJ Event Report：Analog Market 2025 Report
・MJ Shop Guide：Rewire — From Vintage to Professional Audio Equipment
・For Discovering New Sounds and Music：
Notes for Re-Entering the World of Audio [Part 8]
How to Use Audio Equipment for More Comfortable, Better Sound — Basics 1
— Yutaka Masaki
・Future Audio Styles：Highlighted Professional Audio Equipment Seen at InterBEE 2025
— Takashi Iwai
・Classical New Release Reviews— Naoya Hirabayashi, Ikuo Kakuta, Chitake Inoue
・Jazz, Rock & Pop New Release Reviews— Masahiro Imai, Yoshinobu Morita
・Beyond Audio: Great Performances & Recordings in Classical Music (183)：Václav Talich — The Mentor Who Shaped the Czech Philharmonic
— Naoya Hirabayashi
・Into the Forest of Cinema in Search of Masterpieces No. 204 / 205— Masashi Yanagisawa
and more
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MJ Radio and Experiments January 2026 Winter Issue | Seibundo Shinkosha Co., Ltd. (seibundo-shinkosha.net)