Sanken Microphone Co., Ltd. is a leading Japanese professional microphone manufacturer founded on October 1, 1925, by Rihei Takeuchi, initially established as "Takeuchi Factory" in Shinagawa, Tokyo. The company was officially renamed to Sanken Microphone Co., Ltd. in 1959 and is headquartered at 2-8-8 Ogikubo, Suginami-ku, Tokyo. For nearly a century, Sanken has specialized in creating high-quality professional microphones for film, television, broadcast, music recording, and live sound applications. The company has achieved significant recognition, including developing microphones for major Olympic Games (Tokyo 1964, Sapporo 1968, Nagano 1998) and receiving prestigious awards such as the AES Technical Development Prize. Sanken's products are distributed globally, with plus24 serving as their exclusive distributor for North America since 1983. The company remains family-owned, currently led by Michiko Takeuchi as president, continuing the founder's legacy of scientific craftsmanship and innovation in professional audio equipment manufacturing.
Read more
The Circle Labs AS100 and M500 amplifiers debuted at the Audio Video Show Warsaw 2025, showcasing innovative audio technology.
Circle Labs M500 is a flagship two-channel power amplifier with hybrid design, delivering 180W/channel at 8Ω or 1200W at 4Ω as monoblocks.
It incorporates ECC88/6922 triode tubes in SRPP configuration with Mundorf Silver Gold Oil capacitors for signal clarity and distortion minimization.

Circle Labs M500 Power Amplifier:** Debuting at the AVS 2025, this amplifier offers monoblock operation with 600W at 8Ω and 1.2kW at 4Ω.
Stereo Mode Performance:** Provides 180W at 8Ω and 340W at 4Ω, highlighting its versatility and power handling capabilities.
Innovative Circuit Design:** Features ECC88/6922 triode in SRPP configuration, paired with Mundorf Silver Gold Oil capacitors for exceptional audio signal integrity.
Join the HiFi.fan community to discuss experiences with Sanken gear.