Ypsilon Monoblocks Promise the Best of Solid-State and SET Performance

by The Audio Beat | May 17, 2010

psilon Electronics has slowly, surely built a reputation for uncompromised sonic performance across a broad range of audio electronics -- from phono step-up transformers to power amplifiers. The company's new Aelius mono amplifiers ($34,000 per pair) add an element of innovation to the company's standing.

The Aelius monoblocks marry a tubed input stage to a solid-state output stage, offering what Ypsilon calls "the sonic purity of single-ended triode (SET) amplification with the power of push-pull amplification, all with unmatched build quality." Each Aelius uses a Siemens C3g tube in its input stage, MOSFETs in its output stage, and a single 6CA4 as a rectifier.

The Aelius produces 220 watts into 8 ohm and 380 watts into 4 ohms. It will also drive a punishing 2-ohm load, in which case it outputs 500 watts. Its first 60 watts are in class A. Each amp has switchable single-ended and balanced inputs and weighs nearly 100 pounds.

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