Goma Posted August 3, 2021 Posted August 3, 2021 (edited) I bought this just a week ago but have decided to go the high output route that will be consistent with my current MM phono stage. (apologies to the previous owner for using his ad.) This device is very highly regarded internationally and uses Lundahl of Sweden superb step-up transformer designed specifically for modern low output moving coil cartridges and optimised for use into moving magnet phono stage inputs. The price is what I paid and is about a 1/3 of RRP. It features very wide bandwidth, low distortion and carefully designed primary and secondary loading networks to optimise the performance and give beautifully reproduced transients, free from ringing. The core materials and winding techniques employed in the manufacture are unsurpassed and feature multiple primary and secondary windings configured to cancel hum pickup from external sources as well as minimise inter-winding capacitance and maximise bandwidth. The step-up ratio makes it compatible with a wide range of cartridges and our proprietary loading networks maintain a 100 ohm input impedance, also compatible with a wide range of cartridges. Specification can be found at the following link: mc step-up transformer (rothwellaudioproducts.co.uk) turns ratio - 1:20 voltage gain - 26dB (x20) core material - cobalt based uncut amorphous strip input impedance* - 100 ohms optimum load impedance** - 47k + 150pF bandwidth - 8Hz - 75kHz (+0/-3dB) cartridge compatibility (o/p) - 0.2mV - 0.7mV cartridge compatibility (imp.) - internal impedance <20 ohms dimensions - 60 x 155 x 92 mm weight - 580g Edited August 3, 2021 by Goma 1
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