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Yamaha - WXC-70A - Streaming Preamplifier
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Overview
The Yamaha WXC-70A is a compact network streamer and preamplifier that adds Wi-Fi streaming, Bluetooth, TV sound over HDMI eARC and extra digital and analogue inputs to an existing integrated amplifier, receiver, power amplifier or pair of powered speakers. It is a MusicCast device, controlled with the MusicCast Controller app and able to join other MusicCast products in a multi-room system.
A rear switch sets it to Pre Amp mode, where the WXC-70A controls volume, tone and YPAO room calibration, or Player mode, where it sends a fixed-level signal to an amplifier that handles the volume. Yamaha uses an ESS SABRE ES9039Q2M DAC (384kHz/32-bit) with its DAC on Pure Ground circuit layout, in the same 220mm wide aluminium enclosure as the WXA-70A streaming amplifier.
Streaming and MusicCast
- Wi-Fi (IEEE 802.11 a/b/g/n/ac/ax, 2.4GHz and 5GHz) and wired Ethernet
- AirPlay 2, Google Cast, Spotify Connect, TIDAL Connect, Qobuz Connect and Roon Ready
- Internet radio, podcasts and music server (PC/NAS) playback
- MusicCast multi-room audio, including MusicCast Link
- Bluetooth 5.3 with SBC and AAC
- Network and USB playback of FLAC, WAV and AIFF up to 384kHz, ALAC up to 96kHz and DSD up to 11.2MHz
Inputs and Outputs
- HDMI eARC/ARC for TV sound, with power and volume control from the TV remote (CEC)
- Optical digital input and analogue RCA (AUX) input; a turntable needs its own phono preamplifier, as there is no phono input
- USB Type-A for music playback and firmware updates
- Analogue RCA pre-out and subwoofer pre-out
- Optical and coaxial digital outputs (2-channel PCM, 48kHz)
- 12V trigger output, remote (IR) input and YPAO microphone input
- A rear switch turns off Wi-Fi, or Wi-Fi and Bluetooth together, for installations
Modes and Setup
- Pre Amp mode: volume, tone, Dialogue Level and YPAO are handled by the WXC-70A (YPAO needs the analogue connection)
- Player mode: fixed output for an amplifier or preamplifier with its own volume control
- YPAO room calibration with PEQ, Reflected Sound Control (R.S.C.) and YPAO Volume
- Bass and treble controls (±6dB in 0.5dB steps) and subwoofer crossover from 40Hz to 200Hz
- Control4 compatibility, Web Setup, front panel OLED display and remote control
In the Box
- Remote control
- AAA batteries (x 2)
- YPAO microphone (6m)
- Power cord
- Quick Guide
- Safety Guide
Specifications
| Model | WXC-70A |
| Type | Wireless streaming preamplifier (network player) |
| Operating modes | Pre Amp mode, Player mode (rear panel switch) |
| DAC | ESS SABRE ES9039Q2M (384kHz/32-bit) |
| Total harmonic distortion | 0.003% (pre out, AES-17, 20Hz to 20kHz) |
| Frequency response | 10Hz to 38kHz (+0/-3dB), digital and analogue inputs |
| Signal-to-noise ratio (AES-17, IHF-A) | Optical/USB/Bluetooth: 112dB AUX: 98dB |
| Rated output voltage / impedance | Pre out L/R: 2.0V / 700 ohms (1kHz) Subwoofer pre-out: 4.0V / 470 ohms |
| Maximum output level | Pre out: 4.0V (0.9% THD) |
| Maximum allowable input (AUX) | 2.4V or more |
| Volume | 0 (mute) to 100 in 1-step increments (pre out, coaxial and optical outputs) |
| Tone controls | Bass: ±6dB in 0.5dB steps (350Hz) Treble: ±6dB in 0.5dB steps (3.5kHz) |
| Subwoofer crossover | 40, 60, 80, 90, 100, 110, 120, 160 or 200Hz, 24dB/oct |
| YPAO | PEQ, Reflected Sound Control (R.S.C.), YPAO Volume |
| Audio inputs | HDMI (eARC/ARC, CEC) x 1 Optical x 1 (2-channel PCM, 32kHz to 192kHz) Analogue RCA (AUX) x 1 USB Type-A x 1 (music playback and firmware updates) |
| HDMI eARC/ARC audio | 2-channel PCM, up to 192kHz/24-bit |
| Audio outputs | Analogue pre out (RCA, stereo) x 1 Subwoofer pre-out (RCA) x 1 Optical x 1 and coaxial x 1 (2-channel PCM, 48kHz) |
| Other connections | 12V trigger out x 1, remote in x 1, YPAO microphone x 1, Ethernet x 1 (100Base-TX/10Base-T), Wi-Fi antenna |
| Streaming services | AirPlay, Google Cast, Spotify Connect, TIDAL Connect, Qobuz Connect, Roon Ready, internet radio, podcasts, music server, MusicCast |
| Wi-Fi | IEEE 802.11 a/b/g/n/ac/ax, 2.4GHz/5GHz, WPA2-PSK and WPA3-SAE, WPS |
| Bluetooth | Ver. 5.3, Class 1, A2DP and AVRCP, SBC and AAC |
| File formats (network/USB) | FLAC, WAV and AIFF up to 384kHz; ALAC up to 96kHz; MP3, WMA and MPEG-4 AAC up to 48kHz; DSD 2.8MHz, 5.6MHz and 11.2MHz |
| Power supply (Australian model) | AC 230V to 240V, 50Hz |
| Power consumption | 20W |
| Standby power consumption | 0.5W (HDMI Control, network and Bluetooth standby all off); otherwise 2.0W |
| Dimensions (W x H x D) | 220 x 73 x 267 mm (220 x 155 x 267 mm with antenna upright) |
| Weight | 1.9 kg |
| Finishes | Black, Silver |
| Unit | Sold individually |