Bellari PA555 - User Manual

PA555 Preamplier
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.
OUT
PA555
MADE IN USA
2
3
4
1
2
3
4
IN 1
15 VDC
Power
Preamplifier
PA555
Preamplifier
Connection guide
Salt Lake City, UT
4/19
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

Summary

Product Overview and Box Contents

Box Contents

Lists included items: PA555 unit, 15V power supply, owner's manual, and appreciation for audio.

Technical Specifications

Key Specifications

Details input impedance, gain, THD, S/N ratio, frequency response, crosstalk, and output impedance.

Connection and Setup

Connecting the PA555

Step-by-step instructions for connecting audio sources, power supply, and amplifier to the PA555.

Tube Temperature

Information on normal operating temperatures for the vacuum tube and chassis.

Frequently Asked Questions

Tube Information and Usage

Covers tube burn-in time, compatible tube types (12AX7, 7025, ECC83, 5751), and lifespan.

Tube Sound and Performance

Discusses tube brands, best sounding tubes, and the necessity of tube warm-up time.

Component Identification

Front and Rear Panel Layout

Diagrams illustrating controls, inputs, outputs, and indicators on the PA555 unit.

Bellari PA555 Specifications

General

Brand	Bellari
Model	PA555
Category	Amplifier
Language	English