A generation of legendary classics - Marantz 7 (M7) vacuum tube preamp, sound quality is known for its mellow, medium frequency sweet and natural, vacuum tube rich taste!

The circuit of this work is derived from the classic M7 circuit, and the necessary modifications and adjustments are made according to the characteristics of modern components (mainly coupling capacitors) and old antique capacitors, Designed with dual independent design, physical left and right channel 100% separation, independent hierarchical grounding

Vocal, natural, delicate, smooth strings, stretch, positioning and imagery. The high and low frequencies extend into place, and the low frequency dive is deep and powerful without lack of flexibility.

Reasonable layout and connection, multi-level grounding, this product has no annoying noise, very quiet.

High voltage: DC 0---280V (Two groups), Each group not less 10mA

Filament voltage: DC 0---12.6V (Two groups), Not less 0.8A

Recommended use of the tube: 12AX7 and its compatible tube

PCB Size：154mm * 77mm 

NOTE: This is a Kit, All parts need you welding and test it. (We do not include tubes)



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