Simaudio Neo 430HA Headphone Amplifier - Manual (Page 6)

430HA Headphone Amplifier
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6
Introduction
Thank you for selecting the Nēo 430HA Headphone
Amplifier as a part of your hi-fi reproduction system.
This Headphone Amplifier has been designed to
offer state-of-the-art high-end performance in an
elegant package, while retaining all the sonic
hallmarks on which Simaudio has made its
reputation. We have spared no effort to ensure that
it is among the finest headphone amplifiers
available. We have been building high-performance
audio equipment for over 30 years, and the
know-how gained through our cumulative
experience is an important reason why MOON
Headphone Amplifiers are so musically satisfying.
The performance of your 430HA will continue to
improve during the first 300 hours of listening. This
is the result of a “break-in” period required for the
numerous high quality electronic parts used
throughout this headphone amplifier.
Before setting up your new Nēo 430HA, we
encourage you to please read this manual
thoroughly to properly acquaint yourself with its
features. We hope you enjoy listening to the Nēo
430HA Headhone Amplifier as much as the pride
we have taken in creating this fine audio product.
We understand the power and emotion of music and
build our products with the goal of faithfully
capturing these elusive qualities.
The information contained in this manual is subject
to change without notice. The most current version
of this manual is available on our official website at
http://www.simaudio.com
Your Nēo 430HA Headphone Amplifier incorporates many significant design features to achieve its “world-class”
level of performance. This is an abbreviated list of the more important features:
Fully balanced, pure analog amplifier includes a discrete
transconductance circuit topology
Selectable gain setting (14d or 20dB)
Defeatable analog Crossfeed circuit for better
'spacialization' and listening comfort
Balanced Outputs hidden behind sliding front panel window
(2x 3-pin XLR, 1x 4-pin XLR), as well as a 1/4" TRS jack, and
both fixed & variable line-level single-ended RCA stereo pairs
An oversized power supply using 2 toroidal transformers in
conjunction with 8 stages of DC voltage regulation
4 stages of our M-LoVo (MOON Low Voltage) DC regulation
circuit; a highly sophisticated circuit that is virtually free of
noise, yielding an exceptionally fast, precise, and stable DC
voltage. This circuit, found in the Evolution series 810LP
Phono Preamplifier and 740P Preamplifier, results in a power
supply with a virtually unmeasureable noise floor
M-eVOL2 volume control circuit using MDAC's (operating in a
current steering R-2R configuration) which alter the audio
signal's amplitude, yielding no sonic degradation of the signal,
regardless of the selected volume setting. This circuit offers
530 steps and channel matching of 0.1dB
Optional Digital-to-Analog Converter (DAC) with four (4)
digital inputs (S/PDIF x 2, TosLink x 1 & USB x 1) allowing for
use with virtually any digital source; Supports DSD64,
DSD128 and DSD256 (USB input only); Supports PCM
16/44.4kHz to 24/192kHz (all inputs) and up to PCM
32/384kHz (USB input only)
EuP compatible eco-friendly power (less than 0.5W) in
standby mode with defeatable 20 minutes inactivity "auto
shut off"
12 Volt trigger output for remote operations
RS-232 port for (i) full unsolicited bidirectional feedback and
(ii) firmware updates
IR input for external control
SimLink™ controller port for 2-way communications with
other compatible MOON components
Rigid chassis construction to minimize the effects of
external vibrations
Optimized selection of very high quality electronic
components
Low operating temperature for an ultra-long life
expectancy.