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Models 2272, 2273
User’s Guide
GainStation 1
Single channel microphone and instrument preamplifier
N
I
A
G
E
B
U
T
N
I
A
G
N
A
E
L
C
T
u
b
e
+
F
e
t
O
f
f
Gain
Station
10
21
19
18
15
16
14
13
12
11
22
24
26
29
32
35
38
41
46
54
63
dB
dB
L
E
V
E
L
T
U
P
T
U
O
-26
6
-10
-12
-14
-18
-16
-20
-22
-24
-25
-9
-8
-6
-5
-2.5
0
2
3.5
5
5.5
dB
16
12
9
6
7.5
4
2.5
1
18
20
21
22
23
24
24.5
25
25.5
25.8
26
Clip
Hi Z
Mic
SOURCE
Off
50
Hz
HI PASS
Off
+Fet
LIMITER
Peak
Nor.
PHASE
Rev. On
PHANTOM
-30 0 dB 9
18
1.2k
200
IMPED. Ω
10k
Off
Power Limit
48V
AD OVL
Mic: +7dB
w/transformer
Class A Class A
60-Volt Amplifiers
Discrete High-Gain Preamplifier / Model 2272