Bellari PA550 Connection Manual

Short explanation of RIAA equalization.
The RIAA equalization curve was intended to operate as the
global industry standard for records since 1954. However, it
is almost impossible to say when the change actually took
place.
RIAA equalization is a form of pre-emphasis on recording
and de-emphasis on playback. A recording is made with the
low frequencies reduced and the high frequencies boosted,
and on playback the opposite occurs. The net result is a flat
frequency response, but with attenuation of high frequency
noise such as hiss and clicks that arise from the recording
medium. Reducing the low frequencies also limits the ex-
cursions the cutter needs to make when cutting a groove.
Groove width is thus reduced, allowing more grooves to fit
into a given surface area, permitting longer recording times.
This also reduces physical stresses on the stylus which
might otherwise cause distortion or groove damage during
playback.
What's in the box?
1 - Made in USA PA550
1 - 15V power supply PN PS27s
1 - This owners manual
1 - Love for great audio
Bellari is a division of Rolls Corporation
Salt Lake City, UT
6/18
PA550 Pre Amplifier with RIAA Phono preamp
and Headphone Amp
-
0 10
PWR
Headphone Volume
MADE IN USA
PHONO
PA550

SPECIFICATIONS:

Gain:
Input Impedance:
Output Impedance:
Frequency Response:
Equalization:
THD:
S/N Ratio:
PWR:
Size:
Weight:
Indicator:
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0
Phono
- Ch2 Ch1
+ +
Bass Treble
PA550
Preamplifier
INPUT 2 OUTPUT
15 VDC
MADE IN USA
Line 16.4 dB gain @ 1kHz
Phono 56.6 dB gain @ 1kHz
22k line and 47k Phono
8 to 600 ohms Headphone,47 ohms RCA
3Hz to 36kHz
RIAA +/- 1 dB, 14Hz to 23kHz
.005% @ 1KHz
>94 dB unweighted
15 VDC
5.5"w x 3.5"d x 1.25"h
.8 lbs
1 Power LED

Connection guide

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