OAD UP1 Phono Stage

After a long period of development, testing and listening, OAD Ultrafidelity are proud to present their UP1 ultra high quality stand alone phono stage. 

The UP1, is a direct coupled low noise amplification design, capable of faithfully reproducing vinyl recordings in a way that has never before been available at this price point.

The minimal yet elegant design measuring 210mm wide by 95mm high by 183mm deep the UP1 sports an anodised fully CNC machined chassis that weighs 2.3kg with a separate power supply. Both the Phono chassis and PSU are fitted with anti-vibration feet.

Completely seperate circuit boards are implemented for left and right audio channels, with a shared ultra-low noise regulated power supply that comprises 30,000uF of capacitance.

The UP1 is equipped with one set of RCA input jacks and two pairs of output jacks. Both single ended and balanced outputs are catered for. Each channel has two banks of DIP switches. One bank provides for: a large selection of input impedance values from 22 to 47k Ohms; additional capacitance; and Moving Magnet/Moving Coil selection. The second bank of switches sets the overall gain for your cartridge from 40db to 80dB. There is no cartridge that the UP1 will not be compatible with.

Specifications

Input: RCA

Output: 1 pair Unbalanced RCA (single ended) , 1 pair Balanced XLR

Input impedance: 22 Ohm – 47 kOhm (selectable in 8 steps)

Input capacitance (without additional switched capacitance): 100 pF

Input sensitivity: 200uV – 20 mV

Gain: 40 – 80 dB (2 VRMS output at 1 kHz)

THD: 0.005 % (1 kHz)

Signal to Noise Ratio:

MM cartridge: >107 dB A-weighted, input shorted

MC cartridge: > 85 dB A-weighted, input shorted

RIAA linearity: +/- 0.2 dB (20 Hz – 20 kHz)

Output impedance: 50 ohm

Nominal output: 2 VRMS

Maximum output: 10.5 VRMS

Power consumption: 5 W

Dimensions: Preamplifier W 210 x D 183 x H 95 mm, 2.3 kg. Power Supply: W 114 x D 130 x H 63 mm, 1.25 kg

Mains Fuse: 500mA slow blow

Shipping Weight: 5kg

All technical specifications are subject to change without prior notification.

https://www.stereo.net.au/reviews/review-oad-ultrafidelity-up1-phono-preamplifier