Audio Research PH9 MM/MC Phono Preamplifier

Since 1970, High Definition has been more than our trademark; it has been our guiding principle for all products. The Foundation Series continues this passion and philosophy, offering the listener stunning playback, great value, and unparalleled long-term support.

Technical Specifications:

• FREQUENCY RESPONSE: ±.2 dB of RIAA, 5 Hz to 20kHz; 1 dB points below 0.3Hz and above 80 kHz.
• DISTORTION: Less than .015% at 3V RMS 1kHz output.
• GAIN: 55 dB at 1 kHz
• INPUT IMPEDANCE: Selectable loads: 47k, 1000, 500, 200, 100 Ohms.
• OUTPUT IMPEDANCE: 200 ohms. Recommended load 50k-100k Ohms and 100 pF. (10k Ohms
• minimum and 2000 pF maximum).
• OUTPUT POLARITY: Non-inverting.
• MAXIMUM INPUT: 80 mV RMS at 1kHz.
• RATED OUTPUTS: 0.5V RMS 10 Hz to 60 kHz, into 100K ohm load (maximum balanced output capability is 0.46V RMS at less than 0.5% THD at 1kHz).
• CONTROLS: 6 Push Buttons:  Power, Menu, Option, Enter, Input, Mute.
• POWER SUPPLIES: Electronically regulated low and high voltage supplies.  Automatic 2 minute warm-up/brown-out mute. Line regulation better than .01%.
• NOISE: 77 dB, shorted inputs.
• TUBE COMPLEMENT: (3)-6H30P dual triodes, plus (1 each) 6550WE and 6H30P in power supply.
• POWER REQUIREMENTS: 100-125VAC 60Hz (200-250VAC 50/60Hz) 120 watts maximum. Standby: 2 watts.
• DIMENSIONS: Width: 19” (48 cm) Height: 6.5” (13.7 cm) Depth: 13.7” (34.8 cm)
• Handles extend 1.6” (4 cm) forward of the front panel.
• Weight: 15.4 lbs. (7 kg) Net; 23.5 lbs. (10.7 kg) Shipping.

We endeavour to despatch same day for orders placed up to 2pm on available stock items (items with stock message "Usually dispatched within 24 hours"). Please remember to check with us first for a physical stock check if next day delivery is important to you. Any items with stock message "Usually dispatched within 72 hours" are items that we do not hold in stock but order in from the importer or manufacturer as soon as a customer order is received. Occasionally these may be delayed beyond 72 hours due to importer/manufacturer stock levels but we will inform you as soon as we can if this is the case.

UK ORDERS:  We despatch the bulk of our UK mainland items on a 24 hour service – Free of Charge.  Non Mainland locations - Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland may take a day or so longer and are not Free of Charge. Smaller items are delivered using Royal Mail 24 or special delivery. Larger items are delivered using a courier service such as DPD or UPS. 

INTERNATIONAL ORDERS: We offer competitive rates which can be confirmed by email. Please just ask – we will need a full delivery address and telephone number. Smaller items are delivered using Royal Mail Small Packets Airmail with International Tracked and/or Signed depending on value of item and availability of the service. Larger International shipments are sent by insured and tracked services using UPS. If there are any delays due to specific customs regulations, etc, you will be contacted by Hifisound or by the courier with a request for any further information required. Customs duties can apply for shipments to any countries outside of the UK depending on where the product you have bought is made. Customers are responsible for all taxes and duties incurred when the items enter their country.

COLLECT IN STORE OR HOME INSTALL:At the request of the manufacturer some items cannot be supplied by mail order but you can click and buy them and then elect to collect them from our store or arrange a home install (if applicable). Applicable items clearly state that they are Collect in store or home install. Once ordered you will receive a message prompting you to contact us by phone or email to arrange for us to deliver and install or to reserve and collect from our store at your convenience, you will also be advised of the delivery time / stock availability as not all Home install / collect in store items are held in stock.