D1.5 Transport/Player
The D1.5 is more than a disc transport; it is a statement of intent. By engineering every element in-house, from the MORSe transport mechanism to its modular architecture, CH Precision has redefined what optical playback can achieve in the modern era. It honors the company’s very first product while advancing the performance envelope in every dimension: mechanical integrity, digital accuracy, musical resolution, and long-term adaptability. Whether replaying SACD, CD, or MQA discs, the D1.5 restores optical media to its rightful place at the summit of high-end digital reproduction.
The D1 CD/SACD player/transport was CH Precision’s very first product: a discrete multi-channel capable design that introduced the modular card-cage architecture precision engineering and upgradable platform that still define our approach today. In combination with the original C1 DAC it set a benchmark for high-resolution disc playback proving that optical media could deliver music with both technical accuracy and emotional power. That pioneering legacy continues with their direct descendants: the D1.5 Optical Transport and the C1.2 Digital Controller DAC each the product of more than a decade of refinement and innovation.
In the world of optical playback only CH’s own D10 stands above the D1.5. Technically mechanically and musically it represents the pinnacle of our SACD/CD replay capabilities in a single-chassis format. Renewed interest in advanced optical formats (Glass CD, SHM, UHQCD, and MQA CD) has raised the bar for what disc playback can achieve. Yet in recent years the quality of most modern players has declined leaving the full potential of these formats unrealized. The D1.5 changes that. Its in-house-designed MORSe transport mechanism MQA compatibility and modular upgradeable platform allow it to extract the full measure of performance from today’s most demanding discs while honoring millions of existing recordings with the precision stability and musical integrity they deserve.
Created, Not Compromised
For most high-end manufacturers designing a disc transport begins and ends with sourcing an available mechanism from a third party even in products that command six-figure price tags. It’s expedient it reduces cost and in truth many companies lack the internal expertise to do otherwise. But this approach imposes limits: constraints defined not by the elevated pursuit of musical fidelity but by what the supplier happened to engineer for mass-market use. At CH Precision we reject that compromise. Our ethos is simple yet demanding: each component from the architecture of our chassis to the smallest circuit block is conceived to serve a single purpose—extracting and preserving musical information with the greatest possible accuracy.
That commitment is reflected in our team. We have invested in assembling a group of engineers who are not only exceptionally skilled but also deeply passionate about music and its faithful reproduction. This concentration of expertise allows us to approach digital replay not as a matter of adaptation but of creation. Because every stage of development is conducted entirely in-house at our headquarters in Préverenges Switzerland we are able to design refine and integrate each subsystem in harmony with the whole free of the bottlenecks imposed by off-the-shelf parts or outsourced development. This independence also ensures that when new formats or technologies emerge we can implement them ourselves guaranteeing both the quality of the outcome and the speed with which we bring innovations to market. For CH Precision engineering is not a phase of development it is the very foundation of musical truth.
MORSe: Every Nuance Engineered
The MORSe (Mechanically Optimized Reading System) transport mechanism was engineered entirely in-house with every element designed from the ground up to extract the maximum possible performance from SACD CD and MQA discs. At its core a nearly one-kilogram brass sled carries the optical pickup and motor suspended on a finely tuned α-gel damping system to isolate the mechanism from vibration. This assembly is secured within a massive billet-aluminum frame providing an exceptionally stable platform for precise tracking.
The benefits are not theoretical—they are immediate and tangible. MORSe’s stability reduces error correction by allowing the laser to track with extraordinary accuracy producing a cleaner more reliable data stream. By lowering mechanical noise and eliminating timing irregularities at the source it preserves the integrity of the signal long before digital conversion takes place. Each of these refinements accumulates shaping a listening experience of greater resolution finer dynamic gradation and a more expansive natural sense of musical flow. In the end MORSe embodies the difference between adapting what exists and creating what should exist.
The Power of Choice
Like all CH Precision components the D1.5 is built on a modular architecture that adapts seamlessly to a wide variety of system topologies. Out of the box it serves as a dedicated transport delivering reference-grade digital output through CH-Link HD AES/EBU S/PDIF or TosLink. But its capabilities can be expanded significantly ensuring that the D1.5 evolves alongside your system and listening priorities.
For those seeking a single-chassis player solution the D1.5 can be equipped with optional dual-mono DAC boards. These high-performance converters transform the unit into a self-contained SACD/CD/MQA CD player capable of direct connection to any preamplifier or integrated amplifier. Likewise adding the optional Clock Sync board prepares the D1.5 to lock directly to the T1 Time Reference elevating precision by unifying the transport’s clock domain with an external master. Whether serving as a transport alone a complete player or as part of a larger time-synchronized CH ecosystem the D1.5 adapts to your needs without compromise
The CH Control APP
Available for Apple iOS and Android the CH Controller provides complete app-based control of CH Precision systems including input selection volume mute configuration settings and playback functions. It also allows users to access UPnP devices on the network and browse the music stored there bringing system control and local music access into a single interface.
Its structure follows the same operational logic as the componentsthemselves preserving a direct relationship between front-panel control and the mobile experience. True to CH Precision’s engineering culture the control platform is designed as an extension of the component architecture rather than a separate control layer. It adds convenience and flexibility while preserving the integrity precision and musical priorities that define every CH Precision system.
General
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Type: Optical disc transport or player
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Options:
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Digital-to-analog monaural conversion boards
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Clock sync board
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Upgrade path:
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External power supply (X1)
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External digital-to-analog converter (C1.2)
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Reference clock (T1)
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Color: Silver (standard), Anthracite or Champagne (option)
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Dimensions: 440 x 440 x 133 mm (W D x H)
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Weight: 22kg
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Operating conditions: 5°C<T<35°C, 5%<humidity<85% no condensation
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Power supply: Selectable 100V, 115V or 230V AC, 47Hz to 63Hz
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Power consumption: <0.5W standby, 40W nominal
User interface
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Display: 800 x 480 pixels, 24 bit RGB AMOLED
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Control: Dual concentric encoder with push function, Infrared remote control, Android app (iOS app to be released)
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Firmware update: via USB flash drive or the Internet
Supported disc
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CD, CD-R, CD-RW, MQA-CD: stereo PCM 16 bit / 44.1kHz (redbook)
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SACD: single layer and hybrid stereo, DSD 1 bit / 2.8224MHz (scarletbook)
Digital Output
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Type: 1x CH Link HD, 1x AES/EBU (XLR), 1x S/PDIF (RCA), 1x S/PDIF (TOSLINK) per Digital output board (1x standard)
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Sampling rate:
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CH Link HD: PCM 44.1kHz to 88.2kHz, DSD 2.8224MHz
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S/PDIF, AES/EBU: PCM 44.1kHz to 88.2kHz, DSD 2.8224MHz (DoP format)
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Bit depth: PCM 16 bit to 24 bit, DSD 1 bit
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MQA: Raw MQA or unfolding to 24 bit / 88.2kHz OFS stream
Analog Output
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Type: 1x Balanced XLR, 1x single-ended RCA, 1x single-ended BNC per channel
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Bandwidth (-3dB):
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SACD: DC – 50kHz
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CD: DC – 20kHz
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Level: 4VRMS max (balanced), 2VRMS max (single-ended)
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Total Harmonic Distortion + Noise (@ 20Hz-20kHz, A-weighted):
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SACD: <0.0015%
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CD: <0.0020%
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Signal-to-noise ratio (@ 20Hz-20kHz, A-weighted):
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SACD: >120dB
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CD: >120dB
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Dynamic range (@ 20Hz-20kHz, A-weighted):
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SACD: >120dB
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CD: >96dB
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Clocking options
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Clock master or synchronization to reference clock or DAC

