High-grade power supply for E-mu Systems Emax I & II - rack or keyboard versions (contact me before buying just so I can assemble one in time! )

Emax tend to have dying SMPS. Out of 7 units I got to work on, 5 had dead PSUs. It calls for a new design :)

Topology :

This PSU uses two Class-B EMI & EN61000-3-2 Class A SMPS units, designed to minimize mains pollution by design. It also features a ground decoupling stage (to break background hum while conserving earth security) as well as a simple AC filter. The rails are conditioned through common mode and differential pi-filters, then fed into a second stage of linear regulators and further filtered before being plugged to the Emax board. The entire PCB incorporates separated ground planes for enhanced noise management. The capacitors are rated for 5,000+ hours of operation, while the SMPS themselves are specified for 100,000+ hours of life. Average stabilized temperature after 10 hours under load is 50°C for the Emax I, and 45°C for the Emax II.

Informations :

The unit is fully plug-and-play: simply reuse the original Emax AC input socket, screws, and connectors. No modification to the sampler is required. Feel free to get in touch for further informations, pricing/billing details or custom requests :)

Base price : 149.00€, including VAT : 178.80€, including reverb fees : 195€.