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CH Precision – 1 Series

SWITZERLAND  ·  ULTRA HIGH-END AUDIO INSTRUMENTS  ·  OFFICIAL SA DISTRIBUTOR

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At CH Precision, precision is not simply a measure of performance; it is the principle that governs every decision, every technology, and every element of every design.

Every aspect of a CH Precision component is engineered in-house—from analog and digital circuitry to signal processing, streaming architecture, software, power supplies, and mechanical design. Rather than depend on off-the-shelf modules or outsourced platforms, we develop solutions expressly to advance believable music reproduction.

That same independence shapes our modular architecture. CH components are conceived as enduring platforms, able to evolve through hardware, firmware, and system expansion without rendering the original investment obsolete. It is not merely how we engineer. It is who we are.

Precision as Principle

CH Precision components are conceived not as fixed products, but as enduring platforms. Their modular architecture allows each component to evolve through hardware expansion, firmware refinement, and new system configurations, enabling listeners to deepen and refine their experience without abandoning their original investment.

This capacity for evolution is more than an architectural principle. It is the natural expression of a philosophy that unites invention, engineering discipline, and long-term respect for the listener. 

D1.5 Transport/Player

The Evolution of Disc Mastery
Specifications
  • Type: Optical disc transport or player

  • Options:

    • Digital-to-analog monaural conversion boards

    • Clock sync board

  • Upgrade path:

    • External power supply (X1)

    • External digital-to-analog converter (C1.2)

    • Reference clock (T1)

  • Weight: 22kg

  • CD, CD-R, CD-RW, MQA-CD: stereo PCM 16 bit / 44.1kHz (redbook)

  • SACD: single layer and hybrid stereo, DSD 1 bit / 2.8224MHz (scarletbook)

C1.2 DAC

Time. Resolution. Emotion.
Specifications
  • Type: Digital-to-analog converter

  • Options:

    • Additional digital input HD board

    • USB audio board

    • Ethernet streaming digital input HD board

    • Analog input board

    • Clock sync board

  • Upgrade path:

    • External power supply (X1)

    • External line preamplifier (C1.2 in pure DAC mode at fixed level)

    • Reference clock (T1)

  • Digital input
    • Type:

      • 1x CH Link HD, 1x AES/EBU (XLR), 1x S/PDIF (RCA), 1x S/PDIF (TOSLINK) per Digital input board (1x standard)

      • 1x USB type B per USB input board (optional)

      • 1x RJ-45 on Streaming HD input board (optional)

    • Sampling rate:

      • CH Link HD: PCM 44.1kHz to 768kHz, DSD 2.8224MHz to 22.5792MHz

      • S/PDIF, AES/EBU: PCM 44.1kHz to 192kHz, DSD 2.8224MHz (DoP format)

      • Ethernet: PCM 44.1kHz to 768kHz, DSD 2.8224MHz to 22.5792MHz

      • USB:  PCM 44.1kHz to 384kHz, DSD 2.8224MHz to 5.6448MHz (DoP format)

    • Bit depth: PCM 16 to 32 bit, DSD 1 bit

L1.5 Line Preamplifier

Precision in Control. Transparency in Purpose.
Specifications
  • Upgrade path: X1 External Power Supply

  • Dimensions: 440 × 440 × 133 mm (W × D × H)

  • Weight: 20 kg

Analog input

  • Type: 4 × balanced XLR and 2 × single-ended RCA per channel

Analog Output

  • Type: 2 × balanced XLR and 1 × single-ended RCA per channel

  • Bandwidth: DC to >700 kHz, –3 dB; volume at 0 dB; 0 dBu input signal

A1.5 Power Amplifier

Dynamic. Transparent. Effortless.
Specifications

General

  • Type: 2-channel power amplifier

  • Options: 1 or 2 input board (for monaural or stereo operation)

  • Upgrade path: 1 stereo A1.5 to 2 monaural A1.5

  • Modes: Stereo, Monaural, Bridged, Bi-amp

  • Weight: 47kg

Analog input

  • Type: 1x Balanced XLR, 1x single-ended RCA, 1x single-ended BNC per channel​

Power (@ THD+N < 0.1%, 1kHz test signal)

Stereo / Bi-Amp

8 Ohms: 2x 150W RMS

4 Ohms: 2x 275W RMS

2 Ohms: 2x 450W RMS

Monaural

8 Ohms: 150W RMS

4 Ohms: 275W RMS

2 Ohms: 450W RMS

1 Ohm: 700W RMS

Bridged

8 Ohms: 550W RMS

4 Ohms: 800W RMS

2 Ohms: 1200W RMS

M1.1 Power Amplifier

Power. Precision. Musicality.
Specifications
  • Type: 2-channel power amplifier

  • Options: 1 or 2 input board (for monaural or stereo operation)

  • Upgrade path: 1 stereo M1.1 to 2 monaural M1.1

  • Modes: Stereo, Monaural, Bridged, Bi-amp

  • Weight: 71kg

Analog input

  • Type: 1x Balanced XLR, 1x single-ended RCA, 1x single-ended BNC per channel

Power (@ THD+N < 0.1%, 1kHz test signal)

Stereo / Bi-Amp

8 Ohms: 2x 200W RMS

4 Ohms: 2x 350W RMS

2 Ohms: 2x 600W RMS

Monaural

8 Ohms: 200W RMS

4 Ohms: 350W RMS

2 Ohms: 600W RMS

1 Ohm: 1100W RMS

Bridged

8 Ohms: 700W RMS

4 Ohms: 1200W RMS

2 Ohms: 1600W RMS