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Summary of Contents for Atma-Sphere P-2
- Page 1 1742 Selby Av. St. Paul, MN 55104 6516902246 atmasphere.com Atma-Sphere Music Preamplifier model P-2 OWNER'S MANUAL Please study this document carefully before using equipment RoHS...
- Page 2 Please read the manual carefully and follow the instructions closely. If you have any questions, do not hesitate to contact your dealer or Atma-Sphere Music Systems, Inc. Here's to many years of happy listening!
- Page 3 The P-2 may be used with a low impedance (600 ohm) load at the input of the power amplifier which can be used to reduce hum, buzz and interconnect cable artifact.
- Page 4 The stock loading value is 47KOhms. Avoid using NOS 12AT7s in the P-2. Despite frequent claims to the contrary, most such tubes are far too noisy for proper operation in the P-2! Please purchase new 12AT7s from your dealer or Atma-Sphere Music Systems, Inc..
- Page 5 The 12AT7s in the phono section can do this too. If the P-2 is OK on AUX inputs, but rings on the phono, then the phono 12AT7s are most likely at fault.
- Page 6 We recommend line conditioning. The fifth harmonic of the power line frequency has been shown to be far more problematic for good sound then all other types of power line problems (RF, spikes, etc.) put together. We have found that the power cord can have audible effects! A good cable is recommended.
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