Musical Surroundings Linear Charging Power Supply purchased in 2023, was only tested briefly, in perfect condition. Includes original box, manual and accessories. Michael Yee’s continued research into power supply designs has resulted in our Linear Power Supply (LPS). It was originally designed as a “no holds barred” power supply for charging the battery packs of our flagship Super Nova III phono stage. It is a “Classic Analog Power Supply” that uses a 50/60 Hz transformer, large storage capacitors, and low noise linear Voltage Regulators, all designed to achieve the goal of reducing noise for the best sound from an Audiophile Turntable System. When used to power the Phonomena 2, Phonomena 2+, and Nova III phono stages, the LPS will dramatically improve their sound by providing cleaner power and eliminating the noise from a Digital Switching Power Supply. This switching noise is higher in frequency than the audio signals and can modulate the actual audio signal. The Power Supply Voltages may also have the switching noise on them. A Digital Power Supply also radiates via Magnetic Field Emissions that can be transmitted to other components in the Audio System. The LPS uses a Tamura Transformer to convert the line voltage to a usable voltage for the Musical Surroundings Solid State Preamps. Tamura Transformers are very well known for use in Tube Amplifiers, Tube Power Supplies and other audio circuits. Large filter capacitors and rectifiers are part of a noise reduction circuit before Ultra Low Noise, Low Dropout, Precision Voltage Regulators (Linear Technologies LT1965, LT3015). A Single Supply Connection (+22.5V) is supplied for Phonomena II, Phonomena II+, and Nova III. A multi-pin Split Supply Connection (+/-11.25V) is supplied for the Super Nova III and future designs.

Musical Surroundings Nova Phonomena phono stage. The unit is in excellent cosmetic condition and functions as intended. It is quite good sounding and can be used with wall power or optionally as a battery powered unit completely disconnected from the grid. If you look at the picture of the rear of the unit you can see it has a number of settings for gain and impedance. The settings are for each channel separately and are easy to adjust via dip switches that are completely accessible. There is an LED on the front of the unit that flashes red when the batteries are charging, stable red when they are fully charged and green when the unit is in battery mode. There is a switch on the front to go from battery to wall power. The unit can be used in charging mode as well as when it is fully charged. When used the first time after the batteries have been disconnected, the unit will take a while to charge. During that initial charge the amplification may not be functional. The first time I did this I thought it didnt work but read the manual. I recently replaced the batteries (2) which are not particularly inexpensive, but these have very few hours on them. The unit comes with factory packing and owners manual and is double boxed for safe shipping. Buyer pays shipping via UPS ground. Payment is via Ebay on line.