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What's in the box?
1 - Made in USA PA555
1 - 15V power supply PN PS27s
1 - This owners manual
1 - Love for great audio
Salt Lake City, UT
4/19
PA555 Preamplifier
2
3
1
4
IN 1
SPECIFICATIONS
Input Impedance:
10K ohms
Max Output Gain:
11.1 dB
THD:
0.1%
S/N Ratio:
103 db, unweighted
Indicator:
1 Power LED
Frequency Response:
5 Hz - 198 KHz +/- 3 db
Crosstalk:
-75 dB
Output impedance:
100 Ohms
Output Connector:
RCA Stereo
Input Connectors:
1: 1/8" TRS Stereo jack
3: RCA Stereo jacks
PWR:
15 VDC 500mA
Size:
6"w x 2.5"h x 5.4"d
Weight:
2 lb.

Connection guide

Power
PA555
Preamplifier

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Summary of Contents for Bellari PA555

  • Page 1: Connection Guide

    What's in the box? 1 - Made in USA PA555 1 - 15V power supply PN PS27s 1 - This owners manual PA555 Preamplifier 1 - Love for great audio Power IN 1 PA555 Preamplifier SPECIFICATIONS Input Impedance: 10K ohms Max Output Gain: 11.1 dB...
  • Page 2 Mullard long plate made in Great Britain 12AX7. The THD all of the gain of the PA555 is from the 12AX7 tube. The out- was improved quite a lot in our testing. The crosstalk also im- put section is a pair of emitter followers to drive the output.
  • Page 3 NOS tubes we would have to charge considerably 7025 - This is the Military part number for a 12AX7. more for the PA555. In all honesty I do like the factory tube. ECC83 - This is the same as a 12AX7 it is the European part It has very good bass response that you will miss with some number.
  • Page 4 15 VDC RCA's stereo inputs for connection to your source; DAC, Power input is 15 Phono Stage/Pre, VDC for connec- CD player or other. Output RCA's for tion to the external Rolls PS27s power connection to your adapter. power amplifier.