user manual
RA53b
Stereo Headphone Ampli er
Quick Start Guide
ROLLS CORPORATION
SALT LAKE CITY, UTAH
06/2011
PS12
12V AC
www.rolls.com
SPECIFICATIONS
Input Impedance: 10 K ohms
Max Input Level: +18 dBV
Max Gain: 26 dB per channel
Output Power: 221 mW per side, 442 mW per channel
(@ 32 Ohms)
Output Impedance: 10 Ohms
S/N Ratio: >90 dB
THD: <.08%
IMD (SMPTE): <.08%
Power: ROLLS PS12 - 12V AC
(Adapter Provided)
Size: 8.4” x 1.7” x 5”
(21.3 x 4.3 x 13 cm)
Weight: 2.5 lbs (1.14 kg)
1
ROLLS CORPORATION
5968 S 350 W
MURRAY, UTAH 84107
1
RA53b.SCH C
2 March 2003
Title
Size: Document Number:
Date:
Rev:
Sheet of
RA53b 5CH PRO HEADPHONE AMP
Rb
POWER
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
CHANNEL 5
VCC
VCC
VCC
VEE
VEE
VEE
VEE
VCC
VCC
VCC
VEE
VEE
VCC
VCC
VEE
VEE
VCC
VEE
VEE
VCC
VCC
VEE
VEE
VCC
VCC
VCC
VCC
VEE
VEE
VEE
VEE
VCC
VCC
VEE
VEE
VCC
MONO/RIGHT
STEREO/LEFT
VEE
VCC
2
3
1
J13
JAPDC
J1
PHONE 1/4
J2
PHONE 1/4
J3
PHONE 1/4
J5
PHONE 1/4
J7
PHONE 1/4
R712
47K
R711
47K
R107
10K
R108
10K
R207
10K
R208
10K
R307
10K
R308
10K
R507
10K
P508
10K
R407
10K
R708
10K
R101
10
R102
10
3
2
1
4
U1A
4560
2
3
1
4
U8A
4560
5
6
7
8
U8B
4560
6
5
7
8
U5B
4560
3
2
1
4
U4A
4560
6
5
7
8
U4B
4560
R401
10
J4
PHONE 1/4
R402
10
Q1
MPSA06
6
5
7
8
U1B
4560
R201
10
R202
10
6
5
7
8
U2B
4560
3
2
1
4
U2A
4560
R302
10
R301
10
6
5
7
8
U3B
4560
3
2
1
4
U3A
4560
Q20
2N2907
3
2
1
4
U5A
4560
R502
10
R501
10
D9
LDSG
1 3
2
P1A
P100K X2
4 6
5
P1B
P100K X2
R408
10K
1 3
2
P2A
P100K X2
4 6
5
P2B
P100K X2
1 3
2
P3A
P100K X2
4 6
5
P3B
P100K X2
1 3
2
P4A
P100K X2
4 6
5
P4B
P100K X2
1 3
2
P5A
P100K X2
4 6
5
P5B
P100K X2
Q2
2N2907
Q3
MPSA06
Q4
2N2907
Q5
MPSA06
Q6
2N2907
Q7
MPSA06
Q8
2N2907
Q9
MPSA06
Q10
2N2907
Q11
MPSA06
Q12
2N2907
Q13
MPSA06
Q14
2N2907
Q15
MPSA06
Q16
2N2907
Q17
MPSA06
Q18
2N2907
Q19
MPSA06
C1
120PF
C2
120PF
C3
120PF
C4
120PF
C5
120PF
C6
120PF
C7
120PF
C8
120PF
C9
120PF
C10
120PF
C13
10U
C16
10U
R703
10K
R704
10K
R707
10K
R709
10K
R710
10K
J6
PHONE 1/4
J11
PC 1/4
J12
PC 1/4
R701
10K
R702
10K
2
3
1
4
U7A
4560
R705
10K
R706
10K
5
6
7
8
U7B
4560
C11
120PF
C12
120PF
D2
1N4001
D4
1N4001
R3
10K
R4
10K
R503
30
R504
30
R403
30
R404
30
R104
30
R103
30
R204
30
R203
30
R304
30
R303
30
C18 503
R2
4.7K
R1
4.7K
R57
4.7K
J10
PHONE 1/4
D3
1N4001
D1
1N4001
C14
1KUF
C15
1KUF
C19
10UF 16V NP
J13
PC 1/4
12
3
J19
XLR JACK F
12
3
J20
XLR JACK F
R5
10K
R6
10K
R7
10K
R8
10K
R9
10K
R10
10K
1
2
J8A
RCAX2
3
2
J8B
RCAX2
J14
PHONE 1/8
J15
PHONE 1/8
J16
PHONE 1/8
J18
PHONE 1/8
J17
PHONE 1/8
SCHEMATIC