Concert Fidelity electronics are designed and built by hand in Japan in the best artisan traditions of that country — with a perfectionist’s fanatic attention to detail and a purist’s pursuit of optimized simplicity as the means of achieving the most musically authentic results.

Incidentally, achieving Concert Fidelity’s level of circuit optimization and simplification requires a deeper understanding of audio circuits — what is essential versus what is best eliminated — than does implementing complex circuits which contain numerous compensatory components, but once our “surprisingly simple” designs are heard, it is difficult to go back to more complex amplifiers with their colorations and limitations.

As a case in point, the sound of the best tube electronics should be that of the tubes themselves, and our vacuum tube products reveal tube differences to a greater degree than we have ever heard elsewhere. This results in achieving “transparency,” allowing the source material to be revealed in all its emotionally involving glory, without hi-fi enhancements, artificial warmth, muddiness, distortion, or glare.

Concert Fidelity goes to perfectionist and no-holds-bared approach in design and manufacture because we feel that discriminating customers will notice the subtle design touches and will readily hear the difference they make in expressive nuance and musical enjoyment.

Our highly optimized and simplified circuits, innovative and perfectionist layout techniques, carefully specified and matched parts, and custom transformers which may be the world’s best, allow you to hear transient speed and low-frequency extension akin to solid state along with purity, delicacy, and musicality akin to single-ended triodes. With our electronics, you will hear, superiority in the following areas, without even being analytical or conscious:

・resolution of harmonic complexity
・microdynamic expression
・transient speed for resolving rhythmic nuances
・extension and speed in low frequencies
・resolution of complex musical textures
・resolution of soundstage details, along with better presence of individual images

CF-080LSX2 Hybrid Line Stage Preamp:

Advanced input circuitry and volume control circuitry are implemented with our proprietary Direct Signal Path Technology (DSPT). This combines with our low-distortion amplification section using the 12AU7 in cascode configuration to produce extremely fast transient response and clarity. 



ZL-120V2  ve ZL-200 Solid-State Monoblock Amplifiers 

An idealist, minimalist and non-compromise design with meticulous attention to detail in parts selection, layout, and construction, designed and built by Masataka Tsuda in Nagano, Japan, home for many precision mechanical, electronic and optical products.




SPA-4C Phono Equalizer:

Designed as a perfect complement to the CF-080LS Line Stage Preamp. Also realizing Masataka Tsuda’s ideals through circuit simplicity, meticulous care in design and construction, and sonic purity and transparency. Taking full advantage of very rare high quality J-FET’s, in Class A Push Pull configuration. providing up to 50~65dB of gain.



DAC-040 Vacum Tube DAC:

Another ideal companion to the CF-080LS Line Stage Preamp. Based on an acclaimed Philips multi-bit processor, and with a vacuum tube buffer stage, extracts every bit of information from standard CD’s, without relying on any kind of up-sampling, over-sampling, etc. and raises expectations for red book audio CD’s to a new level.