head amp three
design * construction
. for magnetostatic, dynamic and electrostatic headphones
. full tube construction
. full balanced signal prozessing
. balancing of asymmetrical input signals
. input transformers for balancing und galvanic separation
. parallel push-pull design
. class A operating modes in all stages
. output transformers for impedance balancing
. modular technique
. volume control by processor-controlled relays
. all switching processes relay operated
. on-off muting
. startup current limitation
features
. 2 x ECC 81 tubes
. 4 x EF 184 drive tubes
. 4 x 6V6s power tubes
. 2 x input transformers with mu-metal shields
. 2 x output transformers
. display for input, mode and volume
. internal switch mode power supply 150 VA
. power cable 2 m
specifications
. balanced in 2 x 3pole XLR stereo
. unbalanced in 2 x 2pole RCA stereo
. input impedance 100 kOhm
. outputs 2 x XLR 4 pole stereo balanced
2 x 1/4" headphone jack stereo
. power outputs 2 x 12 Watts/8 Ohms total
. output impedance 8 -> 600 Ohms
. high outputs 2 x special high voltage sockets for Stax-Pro headphones
. high voltage 800 Vss. OTL
. Stax Pro bias 580 V-
. voltage 90 - 250 VAC, 50 - 60 Hz
front keyboard
. display for operating mode
. input line 1+2 balanced
line 3+4 unbalanced
. volume control 127 x 0,7 dB steps
. mode LO-IMP + HI-IMP + ESH
. on on - off - store
storage operation
. input select
. mode select
. separate volume adjustment for LO-IMP, HI-IMP and ESH
. display brightness control (remote control)
connectors
. gold plate WBT-RCA inputs
. gold plate Neutrik-XLR-adaptors
. gold plate Neutrik jack plugs
. special sockets for electrostatic headphones (Stax)
remote control
. remote-controllable with Philips's amplifier code
remote control (option)
. input control
. volume control
. mute
. display brightness control
. engraved full aluminium case
. brush-finished
. black anodized
. external dimension: 196 mm (W) x 67 mm (D) x 20 mm (H)
. weight:: 0,5 kg
amplifier case
. engraved aluminium front panel 10 mm
. brush-finished aluminium case
. black anodized
. external dimension: 483 mm (W) x 315 mm (D) x 100 mm (H)
. weight:: 12 kg
