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GOLD Series


The GOLD series is new wine on old bottles, and we think you're going to love it!

Discontinued...

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Ultralow Distortion Line Stage and I/V converter
GOLD is a Dual Mono line stage, with power supply, now available both in balanced and unbalanced version.
It is built using fully discrete through-hole components. The circuit is a special dual folded
cascode, running pure Class A, with very low natural distortion. Thus only a small degree of feedback is required (6-12 dB), allowing for both decent technical data and living natural sound.


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THD vs. frequency at 2V rms line voltage.


The GOLD line stages can be used in a high end preamplifier or D/A converter.


Click!
We will offer a remote/volume control plug-in shortly, based on the professional optical modules supplied by: P&S Technologies Inc..

Balanced GOLD




Basic input / output connections to the Balanced GOLD module.


Using the balanced GOLD module to convert unbalanced line signal to true balanced signal.


Using the balanced GOLD module to convert balanced line signal to unbalanced signal, including common mode rejection.


Using the balanced GOLD module as I/V stage for a balanced I-OUT DAC chip (example shown here AD1853).

The GOLD Balanced Module will interface to:
Balanced Voltage Output. [CS4398]
Unbalanced Voltage Output. [PCM1748][Squeezebox]
Unbalanced Current Output. [PCM1702][PCM1704][TDA1541][TDA1543]
Balanced Current Output. [AD1853][AD1955]
Giving fully balanced output (XLR line level)
or unbalanced output, if only +OUT is used.



Using the balanced GOLD module as a fully balanced pre-amp with volume control.

GOLD Balanced version has on board common mode discriminator, so any common mode noise is removed from the signal, even if only unbalanced output is used.

Each GOLD! Fully Balanced set consist of two boards each measuring:
250 x 120 mm and up to 50 mm in height.


The sound of this line stage is open, airy, super detailled and nicely relaxed.

The power supply is equipped with high speed Schottky Diodes, and can optionally be supplied with UWB regulators. (Standard is 7815/7915). Rail decoupling is performed with 10uF 250V polypropylene capacitors, which are included in this high-end kit.


The Audio related resistors are non magnetic types from Dale/Vishay (series CMF55).

Unbalanced GOLD


Connections to the Unbalanced GOLD module.


[Click!]
The GOLD module connected as Line Preamplifier (Gain = 2), potentiometer 10 - 100k log.


[Click!]
The GOLD module connected as I/V converter / analog stage for TDA1543.



The GOLD Unbalanced Module will interface to:
Balanced Voltage Output. [CS4398]
Unbalanced Voltage Output. [PCM1748][Squeezebox]
Unbalanced Current Output. [PCM1702][PCM1704][TDA1541][TDA1543]
..but not: Balanced Current Output. [AD1853][AD1955]
Giving unbalanced output (RCA line level).


Each GOLD! unbalanced set consist of two boards each measuring:
125 x 94 mm and up to 50 mm in height.




The white PolyCaps 10uF 250V are used as high end powersupply rail decoupling.



NewClassD | Lars Clausen Technologies IVS | DK7500 Holstebro | Denmark | tel +45 31627823 | E-Mail: sales@newclassd.com |31413