Hafler Explore the Features and Manual of the DH-110 Preamplifier

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LINE AMPLIFIER

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520

Fcml R 4 9

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C29 C30

CABLE PIN ASSIGNMENTS

J22 TO J23:A

PIN

1AUX L

2T U N E R L

3 RECORD L

4 LINE GND L

5S H I E L D G N D

6AUX R

7RECORD R

8TUNER R

S LINE GND R

10PHDN02R

11WON0 GNDR

12 PHDND2L

13PHOND 1 R

14 PHOND GND L 15PHONOlL

J24 T O J25;B

PIN

1 GUT LINE L

 

SYMBOLS

I3

P O W E R S U P P L Y G R O U N D

m

SHIELD GROUND

m L E F T ,

 

6> CHANNEL SIGNAL GROUND m R I G H T 1

o+

1

 

POWER SUPPLY RAILS

o-

;

Q

CIRCUIT CARD LAND

 

CHASSIS GROUND

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M A L E C O N N E C T O R P I N

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FEMALE CONNECTOR SLEEVE

-SWlTClj CLOCKWISE, DEPRESSED

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MUTING

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2SHIELD

3WT LINE R

4SHIELD

5EPLSENDR

6EPL RETURN R

7S H I E L D

9 EPI. RETUIN L SEPLSENDL

+ID SHIELD

11 TAPE1 L

1 2 TAPEPL

13 SHIELD

1 4 TAPE2R 15TAPElR

II

R R J J

DH 110 PREAMPLIFIER

SCHEMATIC DIAGRAM 8.85

LEFT CHANNEL SHOWN TO QlS, S7, C30 AND RSO.

LARGE CIRCUIT CARD IS PC14c

0 Copyright 1985. All rights reserved.

21

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Contents Preamplifier Phono Preamp Section SpecificationsAdditional IntroductionPower Connections Operation Mono Switch Proper Soldering ALL Solder Used Must be Rosin Core With the front lug, and the #6 lug at the top. Insert Building the KITPage Page Ight Phono Left PHON’ Co 0 Page AC Line Connections for Overseas USE If a Problem ArisesRl Value Kohms Desired Load Kohms Additional InformationMinimizing Noise in the System Functional Block Diagram Component Values Power Supply I5L NON-COMPONENT Back Side Warranty for Factory Assembled Units Service Policy and Limited Warranty

DH-110 specifications

The Hafler DH-110 is a revered preamplifier recognized for its remarkable performance and versatility in the audio industry. First launched in the early 1980s, the DH-110 developed a reputation for delivering high-quality sound reproduction, making it a favorite among audiophiles and home theater enthusiasts alike.

One of the key features of the Hafler DH-110 is its dual-mono design, which ensures that the left and right channels are processed independently. This configuration helps to eliminate crosstalk and maintain clarity, particularly in complex musical passages. The DH-110 employs high-quality components throughout its circuitry, including metal film resistors and film capacitors, which contribute to a clean signal path and minimize distortion.

The preamplifier offers a wide range of inputs, accommodating various sources such as turntables, CD players, and tape decks. The inclusion of a phono stage for both moving magnet and moving coil cartridges is a standout feature, allowing vinyl enthusiasts to achieve optimal sound quality from their records. This versatility is enhanced by selectable input sensitivity, ensuring that each source can be tailored for the best performance.

Additionally, the DH-110 supports tone control, featuring bass and treble adjustments that enable users to dial in their desired sound signature. While some audiophiles prefer a pure, unaltered sound, the option to adjust bass and treble can be appealing for customizing the listening experience.

The design of the DH-110 exudes classic elegance, incorporating a simple yet functional aesthetic with a robust chassis designed to minimize resonance. The front panel includes clearly labeled knobs and buttons, ensuring ease of use during operation.

In terms of connectivity, the Hafler DH-110 includes both tape monitoring loops and multiple outputs, allowing seamless integration into existing audio systems. The preamplifier can be connected to various power amplifiers, delivering a balanced audio experience that meets the demands of both casual listeners and serious audiophiles.

In conclusion, the Hafler DH-110 is a testament to quality engineering, offering superior performance, versatility, and user-friendly operation. Its combination of advanced technologies, including a dual-mono architecture and high-grade components, make it a timeless choice for anyone seeking to enhance their audio experience with a reliable preamplifier. Whether for home theater use or critical listening, the DH-110 continues to be a solid investment for audio enthusiasts.