RIAA-steg baserat på ECF80-rör för både MM och MC-pickuper.

The Loop phono pre-amplifier is based around pair of NOS ECF80 tubes, employed in the RIAA equalization and MM gain stage, utilizing unique passive RIAA curve equalization, thus providing very neutral sound along with the natural tonal colors of the voices and instruments. The Loop is essentially hand made product, and only the limited number of 50 units will be manufactured.

MC step up gain section is done with J-fets in SMD technology, providing a high MC gain suitable for wide range of MC cartridges, along with MC input impedance (MC load) set-up feature for three most common loads, 50ohm, 100ohm and 200ohm, select-able by micro-switches at the back panel of the unit.

NOS ECF80 tubes and all the parts and elements are rigorously hand selected and matched, after extensive measuring and listening tests, in order to provide a great performance. ECF80 tube sets should last for more than 5000 hours, and matched pairs of NOS ECF80 tube sets are available as spare parts.

When designing the all aluminum case-enclosure, we employed our extensive experience from the turntable design and construction, utilizing 10mm thick aluminum panels, strategically damped and solid aluminum cones-feet damped by rubber-cork washers, doing everything in order to provide a stable mechanical base for the electronics and tubes to work.

Along with the standard 230VAC power supply version, 115VAC power supply version is available as well, differing from the standard version only by the different values of mains transformer and fuse used.

Features and characteristics:

• Hybrid tube design with ECF80 tubes
• MM & MC capability
• RIAA accuracy - 0,5dB/20Hz-20kHz
• MM gain - 38dB
• MC gain - 64dB
• Input impedance MM - 47kohm
• Input impedance MC - 50,100,200 ohm
• Output impedance - 3kohm (load over 20kohm)
• Power supply - 230VAC 50-60Hz or 115VAC 50-60Hz
• dimensions WxDxH - 310x280x125mm
• total weight - 6.95kg