Perseus Phono Preamplifier
|發燒音響 (Audiophile) Oct 2016|
Getting the best possible sound
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 KΩ 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.
Fully complementary circuitry
The Perseus's balanced audio circuitry is essentially two mirror-imaged preamp circuits, one to amplify the positive half of the audio signal, the other to amplify the negative half. The fully balanced design cancels the effects of interference-an important capability considering the low level of the signals inside a phono preamp-and also increases slew rate and frequency response.
Mechanically isolated circuit board
The audio circuit board floats on an elastomeric suspension to isolate it from the effects of outside vibration. Consider it like a raft floating on a calm lake, protected from disturbances on shore.
Machined solid aluminium chassis
A heavy aluminium chassis with 8.2mm minimum wall thickness shields the internal circuitry from all forms of electromagnetic interference, and also helps damp vibration that might affect the audio circuitry.
Balanced and unbalanced inputs and outputs
Easily interfaces with any turntable and any preamplifier.
Two moving-coil inputs, one moving-magnet input
Ample inputs even for the most exotic triple-tonearm turntables.
Adjustable source impedance
The Perseus provides enough adjustment range to suit any cartridge manufacturer's specification or any personal taste. Source impedance for the moving-coil cartridge inputs is continuously adjustable from 5Ω to 1000Ω, while source impedance for the moving-magnet cartridge input can be set to 33KΩ, Separate Power Supply 47KΩ, 68KΩ or 100KΩ.