Performance Series
Perseus / Phono Preamplifier
Perseus / Phono Preamplifier / Overview
When it came time to create the Perseus phono preamp for our Performance line, we couldn't bear to depart from the design of the Orion Reference line phono pre. After all, the Orion blended the best efforts of our “dream team”: the circuit wizardry of legendary engineer John Curl, the industrial design prowess of Alex Rasmussen at Neal Feay Company, and the engineering and manufacturing mastery of Peter Madnick. In the end, we decided not to change what works so well-thus, the Orion uses the same incomparable John Curl circuit, implemented in a way that is simpler and less expensive to manufacture.

Curl is revered by audiophiles as the world's greatest designer of phono preamps, having designed acclaimed phono pres for CTC, Mark Levinson, Parasound, SOTA, and Vendetta Research. In Constellation Audio products, his circuits receive greater care and more elaborate execution than any other manufacturer has ever offered.

Perseus Phono Preamplifier
The circuit board of the Perseus is built on a metal “raft” that floats on an elastomeric suspension, isolating the delicate circuits from outside vibrations. This is especially important in a phono preamp. Because of the low signal level coming from the phono cartridge, phono preamp circuits tend to microphonic; external vibrations can be amplified and become part of the audio signal. Thanks to the floating circuit board suspension, microphonics are practically eliminated.

More sonic improvements come from the machined aluminium chassis, which has a minimum wall thickness of 8.2mm-enough to block even the strong 50/60 Hz electromagnetic interference from household electrical circuits and appliances. The mass of the heavy metal enclosure also improves rejection of external vibration.

Perseus Rear View
The separate power supply provides an R-core transformer for left- and right-channel analog circuits and an independent supply for the control circuitry. Analog circuits receive pure, clean DC power. As a result, noise drops to insignificant levels and all of the intricate details of the music are revealed. Hypertronics interface cables and connectors, originally designed for demanding aerospace applications, provide ample conduits for the power supply's clean, high-current output.

The Perseus can be tuned to optimize its performance for even the most exotic phono cartridges. Front-panel controls allow adjustment of source impedance and load capacitance for the ideal performance from any cartridge you choose. Impedance is continuously adjustable from 0 to 1000 ohms for moving-coil cartridges. For moving-magnet cartridges, the Perseus provides four impedance selections from 33 to 100 kilohms as well as five load capacitance options from 200 to 400 picofarads. Whether you decide to follow the cartridge manufacturer's recommendations or explore your own course, the Perseus has the versatility to get the best possible sound from your cartridge.

As appealing as the Perseus's design may sound in prose, its quality can be appreciated only when you hear it. We can't say it's the world's best phono preamp-that would be the Orion-but we think it's a clear second-best.

Performance Series Index
Argo Integrated Amplifier
Virgo III Line Stage
Cygnus Digital File Player/DAC
Perseus Phono Preamplifier
Centaur II Mono Power Amplifier
Centaur Mono Monoblock Power Amplifier
Centaur Stereo Power Amplifier

Inspiration Series Index
Preamp 1.0 Line Stage
Stereo 1.0 Stereo Power Amplifier
Mono 1.0 Monoblock Power Amplifier

Reference Series Index
Altair II Line Stage
Orion Phono Stage
Hercules II Mono Power Amplifier
Hercules II Stereo Power Amplifier

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