Hafler HA75 User manual - page 5
HA75 'TUBE HEAD' HEADPHONE AMP
Hafler
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8. PoWeR: ±16V 1600 mA external power supply included.
9. Tube ouT: Add the Tubehead's warm tube character to a signal
path between a preamp and power amp if desired.
10. THRu: Un-buffered thru-puts that bypass the HA75 circuitry.
11. InPuT-b: Unbalanced RCA inputs to connect any -10dB line level
source to the HA75.
12. InPuT-A (RCA): Switch-able balanced and unbalanced inputs for
any hi-fi system. Standard RCA connectors.
13. InPuT-A SeLeCT: Switches between RCA and XLR connections
for INPUT-A.
14. InPuT-A (XLR): Balanced input for hi-fi system or studio use. XLR
inputs follow the AES standard with pin-1 (ground), pin-2 (+) and
pin-3 (-).
15. 12AX7 Tube: Dual triode tube operates
with a B+ of about 140 Volts.
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