Handbuild Minimalism M7i Tube Pre Amplifier (Sold)

Made In Rumah  


The circuit
The M7i is a derivative of the famous Marantz M7 preamp which attracted a cult following during its production run and has since ascended the throne of an audio legend. So much so, Marantz has even recently released a limited edition run of the same preamp together with the power amp, the Marantz 9.


The M7's line-stage, in case you didn't know, is based around three triode sections in cascade, with the last section in a cathode follower configuration.
This helps lower output impedance allowing the preamp to drive most loads comfortably. Most crucially, it will happily drive the lowish input impedance of most modern solid-state amps — something which many preamps from the golden days of tubes can't do.
The rest of the small signal circuitry used in the original M7 is not reproduced; not many people will find a use for the extensive tone controls these days, methinks.

There is a major change implemented in the M7i, and it's the use of a regulated solid state supply. Here, the HT is regulated using a combination of discrete and integrated linear voltage regulators. Even the heater voltage is regulated so that there's no AC running around in there.


Description For this unit:


HandBuild M7i with premium components
(Auricap, Kiwame, Step volume controller, etc) into an aluminium casing.

The preamp is completely silent. Included are 2 pair of JJ 12AX7 and 1 JJ 12AU7 tubes.

Only 1 X RCA input
and 2 X RCA output



Price: RM sold

Contact Simon Ting : 012-3612507