Erhard Audio/Lundahl Premium MC Phono Step-Up (SUT) Box suitable for two different cartridge models.
This SUT box can be supplied with the Lundahl LL1931, LL1933, LL1941, LL1943, LL1961, LL1971 or LL1963 MC step-up transformers. (click on the model numbers to bring up the data sheet). The model used will depend on the cartridge/s you have.
This SUT is specifically designed for those who have two different model MC cartridges. Please do note, that these cartridges should have similar output signal levels in order to use the same SUT transformer for both of them.
The design was optimized for low to medium output MC cartridges and the sonic performance with these transformers is exceptional.
The LL1931 and LL1933 provide 18dB and 24dB step-up capability that is switch selectable via the front panel Hi/Low switch.
The LL1941 and LL1943 provide 24dB and 30dB step-up capability that is switch selectable via the front panel Hi/Low switch.
The LL1971 provides 22dB and 27dB step-up capability that is switch selectable via the front panel Hi/Low switch.
The LL1961 provides 4dB and 10dB step up capability that is switch selectable via the front panel Hi/Low switch.
The LL1963 provides 10dB and 16dB step up capability that is switch selectable via the front panel Hi/Low switch.
For the Ultimate in MC Step-up the LL1931, LL1933, LL1941 and LL1943 are all available wound with high purity silver wire as an option.
There is also grounding flexibility designed into the SUT to allow the best performance with different types of tonearm cabling, this is also user configurable via small DIP switches on the rear panel.
Parallel R-LOAD resistors are selectable via a front panel switch, one for the lower step-up ratio and one for the higher step-up ratio.
The black enclosure is an extruded aluminum case that provides exceptional RF shielding. The enclosure is physically small, 5.16″(131.15mm) x 3.43″(87mm) x 1.86″(47.11mm), so it can be located conveniently.
The front and rear panels are precision CNC machined with the appropriate engraved lettering.
High quality parts are used throughout such as gold plated RCA sockets and fully sealed gold contact toggle switches. The front and rear plates are CNC machined with engraved lettering.The FR4 pcb is in house designed.
Of course this SUT can be used with just one cartridge as well.
These are fully assembled and tested and are not available in kit form.