The DH-110's low noise and distortion, versatily control center is the standard bearer of the Hafler line. The DH-110 challenges comparison at any price on any criteria.
The improvements the DH-110 lends to your system are obvious the moment you start to listen. A three-dimensional image takes shape, acoustics are more accurate, voices are more precise transients are more articulate.. With the DH-110 reproduced sound becomes real.
Facilities include two magnetic phono inputs, two complete tape circuits with monitoring facilities and LED indication of monitoring mode a separate input-output loop for an equalizer or other signal processor a switchable highpass filter easy conversion to rack mounting (adapters are supplied), a front panel jack for most high impedance headphones, or for tape recording, and two pairs of audio outputs - one of which is switched by the headphone jack for private listening.
The full complementary symmetry circuit employs all discrete silicon transistors - no ICs. Precisions components hold very tight tolerances on inter-channel balance and RIAA equalization. This assures accurate phase relationships for correct spatial perspectives. An integral muting circuit eliminates turn-on and turn-off annoyances. The precision volume control ,maintains accurate balance between channels. The tone controls are effective while audibly unobtrusive but may be totally bypassed.
Less obvious significant refinements include a full power bandwidth that extends to 200 kHz, easily accommodating problem signals, a low impedance power supply; the use of low distortion low dielectric loss capacitors; silver plated contacts on the selector switches for long term noise-free operation; internal grounding of unused inputs for lower crosstalk; internal sockets for phono loading capacitors to accommodate specific cartridges; and a very wide phono acceptance level to handle the full dynamic range of the best cartridges.
Specifications
Phono Preamplifier Section
Rated Output: 3 V rms, 8 Hz to 105 kHz
Max. Output: 12 V rms at Rec Out
Total Harmonic Distortion : 0,0006% at 3 V rms
RIAA Frequency Response : 20 Hz - 20 kHz +0 dB -0,25 dB
RIAA Equalization Accuracy: 30 Hz to 15 kHz +0 dB -0,1 dB
Sensitivity (1/2Volt at Rec Out) : 10 mV
Max. Input Signal (at 1 kHz): 300 mV (3 V at 20 kHz)
Gain: 34 dB at 1 kHz
Input Impedance: 47 k Ω in parallel with 30 pF. User Adjustable. Plug in capacitors are installed to increase this to 150 pF/Phono1; 250 pF/Phono 2
Signal-to-Noise Ratio: 87 dB below 0,5 Volt output
Slew rate: 12 Volts per microseconds
Line Amplifier Section
Rated Output: 3 V rms 4 Hz to 210 kHz
Max. Output: 14 V rms, 20 Hz to 20 kHz
Total Harmonic Distortion less than 0,001%
Frequency Response: 20 Hz to 20 kHz +0 dB -0,1 dB
Sensitivity: 50 milivolts
Max. Input Signal (at 1 kHz): 14 V rms, volume control at -20 dB
Gain: 20 dB
Input Impedance: better than25 k Ω
Signal-to-Noise Ratio: 105 dB
Slew Rate: 12 Volts /µsec
Crosstalk: 72 dB down
Separation: better than 82 dB at 1 kHz; 52 dB at 20 kHz
Bass Control: ±17 dB at 20 Hz (variable turnover)
Treble Control: ±17 dB at 20 kHz (shelving at 5 kHz)
Filter Control: 25 kHz -12 dB/oct
General Specifications
Semiconductors: 30 Transistors; 3 ICs; 12 Diode; 2 LEDs
Inputs: 2 x Phono, Tuner, Aux, 2 x Tape, EPL
Outputs: 2 x Tape (buffered), 2 x Line EPL, Headphone jack
Intermodulation Distortion: below residual of instrumentation
AC Power: 100 - 130 and 200 - 260 V, 50/60 Hz 3,5 Watts
AC Convenience Outlets: 2 switched 1 unswitched
Dimensions (W x H x D): 17" x 3" x 8-1/2" + 1: knobs, 19" rack mounting
Weight: 10 lbs net
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