Cayin BTC-2 Hi Res Bluetooth DAC Headphone Amplifier

Cayin BTC-2 Hi‑Res Bluetooth DAC Headphone Amplifier

Turn any source into rich, high‑resolution listening—wirelessly or wired

Stop choosing between convenience and fidelity. Cayin’s BTC‑2 brings true hi‑res Bluetooth to your desk and adds a clean, punchy headphone amp and full DAC hub in one compact, all‑metal chassis. Stream in via LDAC or aptX HD, plug in a coaxial digital source, or feed it analog line‑in—then enjoy balanced 4.4 mm or 6.35 mm headphone output, send line‑level to powered speakers, or even pass digital out to a separate DAC. It’s the small box that brings every source together, without sacrificing sound.

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Why Audiophiles Choose This Product

• Primary Benefit: Clean, detailed sound with a natural, non‑fatiguing presentation and a wide, well‑organized stage—impressive for a Bluetooth‑enabled desktop unit. Independent reviewers praise its finesse with strings and vocals and its composure on complex passages.
• Technical Benefit: Proven ESS Sabre ES9018K2M DAC paired with Qualcomm’s QCC5125 Bluetooth SoC and a balanced 4‑channel amplification path, for low noise and precise channel control.
• Practical Benefit: Simple front‑panel controls with a silky ALPS volume potentiometer and a crisp 1.7" white OLED display that shows input, codec, and sample rate at a glance. The detachable SMA antenna optimizes wireless reception.
• Compatibility Benefit: Bluetooth 5.1 (LDAC, aptX HD, aptX LL, aptX, AAC, SBC), S/PDIF coaxial input up to 192 kHz/24‑bit, and stereo RCA line in/out let BTC‑2 integrate with phones, tablets, PCs, TVs/set‑top boxes with coaxial out, and powered speakers.
• Unique Benefit: Acts as a Bluetooth receiver and digital hub—decode to its own headphone/line outputs or forward a Bluetooth stream as coaxial S/PDIF to an external DAC. Few compact units offer both S/PDIF in and out at this price class.

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What’s Included

• Main Product: Cayin BTC‑2 Hi‑Res Bluetooth DAC/Headphone Amp (balanced 4.4 mm and single‑ended 6.35 mm headphone outputs; RCA line in/out; RCA coaxial S/PDIF in/out).
• Primary Accessory: USB‑C power cable (5V/1A input). Power adapter not always included; any 5V/1A USB power source works.
• Secondary Items: Detachable “rubber‑duck” SMA antenna for Bluetooth reception; infrared/Bluetooth remote is available and bundled in some regions, but is an optional accessory per Cayin.
• Documentation: User manual and warranty information (regional terms vary).

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Technical Specifications

Specification	Value	Notes
Product Type	Desktop Bluetooth DAC/headphone amp	Bluetooth 5.1 receiver; wired line and S/PDIF hub.
Bluetooth codecs	LDAC, aptX HD, aptX LL, aptX, AAC, SBC	Codecs displayed on OLED screen.
Bluetooth SoC	Qualcomm QCC5125	High‑fidelity BT platform.
DAC	ESS ES9018K2M	Low‑power stereo Sabre DAC.
Amplifier topology	Balanced 4‑channel with ALPS volume pot	Low noise and precise tracking.
Headphone outputs	4.4 mm balanced; 6.35 mm single‑ended	Front‑panel.
Rated power	280 mW + 280 mW (BAL), 190 mW + 190 mW (SE) @ 32Ω	Suitable for IEMs and many portable‑friendly headphones.
Digital I/O	RCA coaxial S/PDIF in/out (up to 192 kHz/24‑bit in)	Single RCA serves in/out depending on mode.
Analog I/O	RCA line in; RCA line out	Desktop hub flexibility.
Display	1.7" 128×32 white OLED	Input/codec/sample rate status.
Antenna	Detachable SMA “rubber‑stick”	Optimizes range and placement.
Power	USB‑C 5V/1A	Draw ~250 mA under LDAC at 32Ω BAL load (typical).
Dimensions	168 × 167 × 39.5 mm	Compact desktop footprint.
Weight	≈0.75 kg	Solid, all‑metal build.

Notes:

• BTC‑2 is a Bluetooth receiver/DAC/amp. It does not transmit Bluetooth audio from wired inputs.
• Some retailers note user‑selectable digital filters (Fast/Slow/Minimum‑phase) accessible via the menu; availability can be region/firmware dependent.

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Professional Recognition

• Reviews: Regional reviewers highlight BTC‑2’s “small size, big performance,” calling out airy staging, strong vocal detail, and confident layering—even over Bluetooth.
• Retailer Feedback: Specialty dealers emphasize its rare mix of LDAC reception plus both coaxial S/PDIF input and output, making it a flexible desktop hub.
• Heritage: Built by Cayin (Zhuhai Spark Electronic Equipment Co., Ltd.), a hi‑fi manufacturer established in 1993 with deep expertise from tube amplifiers to modern desktop and portable audio.
• Engineering Touches: ALPS volume potentiometer and robust metal enclosure for EMI shielding and long‑term reliability.

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The Bottom Line

If you want simple, stable hi‑res Bluetooth for your desk without giving up the fidelity of a wired DAC/amp, Cayin’s BTC‑2 nails the brief. It consolidates your wireless streaming, digital coax, and analog sources into one elegant box—with balanced headphone drive and the option to feed an external DAC when you’re ready to upgrade further. It’s a thoughtfully engineered, future‑friendly desktop hub from a brand with three decades of audiophile credibility.

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