MASS-Kobo Model 465

The MASS-Kobo Model 465 is the current flagship from M. Masuda, a fully balanced desktop headphone amplifier that inherits the bloodline of the legendary Model 406 and extends it with true dual mono architecture, separate left and right power supplies, and the same clean, transparent, and effortlessly listenable character that has defined MASS-Kobo's reputation for decades.

Type and Technology

Fully balanced desktop headphone amplifier, solid-state. True dual mono design with independent left and right power supplies for complete channel isolation. Balanced XLR inputs with +4dBm/-10dBm reference level selection and unbalanced RCA inputs. Balanced XLR4 and dual XLR3 (L/R) outputs alongside single-ended 6.35mm. Made to order by M. Masuda in Japan.

Sound Character

Clean, transparent, and deeply musical. The 465 has the MASS-Kobo hallmark of a completely composed presentation, no editorializing, no added warmth or brightness, just the recording reproduced with exceptional fidelity and a sense of effortlessness that rewards long listening sessions. The dual mono architecture produces a stereo separation and channel clarity that is immediately apparent on complex material.

Build and Finish

Built individually by M. Masuda to his personal specifications and quality standards. Each unit is made to order with a production time of approximately 1 to 4 months depending on parts availability and Masuda-san's schedule. Worldwide power supply (AC100-240V). Standard IEC power cable included.

Best For

Serious audiophiles who want a handcrafted Japanese flagship amplifier with a lineage traceable to one of the hobby's most admired builders, particularly those who value transparency and musical honesty above all other qualities.

What's in the Box

• MASS-Kobo Model 465 headphone amplifier
• Standard IEC power cable

Please note: This is a made-to-order product. Production time is approximately 1 to 4 months from order. No cancellations are accepted after an order is placed. Serial numbers are assigned in order of receipt. Custom duties are the responsibility of the customer.

Specifications