an ultimate implementation of a line control amplifier and a headphone amplifier, both of which functions are performed by the same minimalist vacuum tube circuit with very low output impedance. Such providing the amplifier with an outstanding ability to simultaneously drive long cable runs and headphones with an impedance as low as 50 ohms or even lower.
The DFAmp also features unique tone control facilities and a custom designed remote volume control presented with typical THÖRESS style and attention to detail. The circuit of the amplifier consists of a triode gain stage followed by a unity-gain current buffer employing a power pentode operated in triode mode with high idle current.
• Vacuum tube line control and headphone driving amplifier.
• Both functions performed by the same unique minimalist single-ended zerofeedback circuit utilizing 2x12J5GT+2x12GN7 or 2x6J5GT+2x12GN7 tubes.
• 6x line level inputs, 3x26dB + 2x18dB + 1x10dB gain (2×6 RCA jacks).
• Triple master output with very low output resistance (2×3 RCA jacks).
• 2x toggle-selectable headphone outputs (2×6.35mm jack sockets).
• Remote volume control via motor-driven dual-potentiometer with excellent
channel balance and low angle sensitivity for conveniently fine volume
adjustment.
• Four on-the-fly selectable tone control presets entangled with a 6dB gain
attenuator implemented via 6-position rotary dial (GT selector).
• Full hand construction, point-to-point wiring throughout.
• Ultra low noise and low leakage mains transformer manufactured in-house
• Nonmagnetic aluminum casework, front and rear panel with anodized printing,
powder coated lids, dimensions: 434x434xH154mm, 154=134+20/footers.
• Dimensions of the crate: 650x650x350 mm. Shipping weight 11.7Kg.