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The OM1 Preamplifier
New Model
The Optional Phono
Stage
The AC4 Power Supply
The DC12 Battery Power
Supply
Technical Specifications
About the designer,
Stephen Balliet
Contact
Links
Home
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OM1 design features and specifications:
- Ultra fast 2500 V/µsec. hybrid microchip
design (transients and detail resolution)
- Phase accuracy of ± 0.5° through
the audio bandwidth (improved soundstage)
- Direct coupled: no capacitors or servos
in the audio path
- Class A biased: sweet sound without crossover
distortion
- Minimal signal path: DC-2.0mHz
- 31 position, precision stepped resistor,
shunt attenuator: reliable 0.1db tracking
- RF filtered power line: reduced out-of-band
interference
- 1.0% metal film resistors, Cardas rhodium
plated connectors
- Both balanced and single ended inputs
and outputs
- A special adapter converts balanced output
into a second inverted unbalanced output for use in biamplification
- Total harmonic distortion (plus noise)
at 1k: .0014%
- Output impedance: 50 unbalanced, 100 balanced
- Maximum output: +20dbu balanced, +14dbu
unbalanced
- 114db dynamic range
- Line stage gain: 8db, unbalanced; 14db
balanced
- Dimensions: Width 17", Height 4",
Depth 14"
- Combined weight (OM1 with AC4): 26lbs
(12kg)
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