Specially designed for custom integration of whole home audio systems, the "QS" (Quad Streamer) provides four zones of audio streaming and eight channels of high-performance audio amplification in an ultra-slim, 1U-high, rack-mountable enclosure. Expandable and extremely flexible, the QS works with the MusicCast multi-room audio system, allowing it to be linked with home theater AV receivers, sound bars and Hi-Fi gear in a wide variety of configurations.
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Ingenious Integration
Designed from the ground up for custom installation, the “QS” represents the ultimate integrated solution for filling every room in a home with extraordinary sound.
Slim Yet Powerful
The QS packs four rooms of audio streaming and eight channels of audiophile-grade amplification into a remarkably slim, 1U-high enclosure, allowing you to fully-optimize your valuable rack real estate.
Expands Easily
Multiple QS units can be used together to expand up to 32 zones with simultaneous playback of linked groups up to 20 zones each. In addition, the QS offers four zone pre outs that enable it to be combined with the Yamaha XDA-AMP5400RK, a companion multi-room amplifier, to provide more power or more speaker coverage for large areas in a home. The pre outs may also be used to connect powered subwoofers or subwoofer amps.
A Family Like No Other
As a member of the MusicCast family, the QS integrates seamlessly with Yamaha AV receivers, sound bars and more. Now everything – from a surround sound home theater to a bedroom TV system to in-ceiling speakers in the kitchen – can all work beautifully together.
Stream It All
Access all of your favorite music, including built-in streaming services and music libraries on smartphones, tablets and networked-attached storage devices.
(Streaming service availability varies by region.)
Plays Nicely with Everything
Want to hear TV sound or vinyl records throughout the home? Link to a MusicCast receiver, sound bar or turntable to access audio from virtually any source.
3rd-Party Control
The QS supports IP control by 3rd-party control systems used in many of today’s most advanced smart homes.
There’s an (Amazing) App for It
It's also easy to set up and control with the free MusicCast app, which offers unique personalization features including the ability to assign custom images to rooms, and to rename, rearrange and hide sources.
Audiophile-Grade Amplification
No ordinary amp, the QS employs ultra-efficient ICEpower integrated circuits to deliver eight channels of pristine, musically-dynamic digital amplification at 50 watts/channel (8 ohms) with an outstanding 10 Hz to 22 kHz (+0/-3 dB) frequency response and 106 dB signal-to-noise ratio. It is 4 ohm capable at 100 watts/channel and bridgeable to 200 watts/channel (8 ohms).
Goodbye Ground Loop Hum
The curse of the custom integrator: ground loop hum, a common and vexing side effect of connecting a bunch of electronics together in a rack. The QS takes care of it with a brilliantly-engineered differential circuit design. Sometimes it’s what you don’t hear that sounds the most amazing.
High-Resolution Audio
Experience every detail of your favorite recordings. The QS supports high-res audio playback up to 192 kHz/24-bit, and employs the same premium ESS Sabre DACs (Digital-to-Analog Converters) and PML capacitors used in our flagship AVENTAGE AV receivers.
Uniquely Yamaha
The audio performance of the QS is further enhanced with a suite of exclusive Yamaha technologies, including our Compressed Music Enhancer, Advanced Bass Extension Processing and volume adaptive EQ. The result – it always sounds great.
Versatile Installation
Mount it in a rack with the included ears or remove the ears for shelf installations. The included magnetic faceplate discourages tampering and provides the perfect cosmetic finish.
Custom-Friendly Connectivity and Control
The QS is truly made for custom integration, with Euroblock-style speaker connectors, dual RJ-45 Ethernet ports and a detachable AC cable for smart connectivity, and IP, IR and 12 V Trigger Out jacks for versatile control.
Three Ways to Handle External Sources
In addition to supporting external sources through linking with MusicCast receivers and sound bars, the QS offers an Aux input that can be selected for playback in any zone and a Cut-In input that automatically senses an input signal and temporarily overrides the selected source. This gives you flexibility to integrate media players, CD changers or even paging systems. Thru-Outs let you set up a bus to additional QS units.
Unique Chime Generator
The Chime contact closure inputs let you generate a doorbell chime or, for example, an alert for a gate from a common switch. Output zones and chime sound selection can be configured using the Web Setup.
Web Setup
Access Basic or Advanced settings via a Web Setup menu and store commonly-used profiles for faster configuration of future projects.
| File Format | MP3 / WMA / MPEG-4 AAC, ALAC: up to 96 kHz / 24-bit, WAV / FLAC / AIFF: up to 192 kHz / 24-bit |
| Ethernet | Yes (2 terminals) |
| AirPlay | Yes (AirPlay 2 via firmware update) |
| Channel | 8 Channel (2 channel x 4) |
| Minimum Speaker load Capability | 4 ohm |
| BTL Connection | Yes |
| Speaker Output Terminal | 4 (Euroblock) |
| Preout Terminal | 4 |
| Audio Input Terminal | RCA: 2 (CUT IN, AUX), USB: 4 |
| Audio Output Terminal | RCA (2-ch through out): 2 (CUT IN, AUX) |
| Trigger In / Out | 0 / 4 |
| Remote In / Out | 1 / 1 |
| Chime | 4 |
| Rated Output Power (1 kHz, 0.9% THD, 2ch driven) | Normal (4 / 8 ohms): 90 / 50 W, Bridge (8 ohms): 100 W |
| Rated Output Power (1 kHz, 0.9% THD, 1ch driven) | Normal (4 / 8 ohms): 100 / 50 W, Bridge (8 ohms):200 W |
| Dynamic Power (20 Hz-20 kHz, 0.08% THD, 2ch driven, 20 ms burst) | Normal (4 / 8 ohms): 80 / 40 W, Bridge (8 ohms): 150 W |
| Dynamic Power (1 kHz, 0.9% THD, 2ch driven, 20 ms burst) | Normal (4 / 8 ohms): 100 / 50 W, Bridge (8 ohms): 200 W |
| Dynamic Power (1 kHz, 0.9% THD, All ch driven, 20 ms burst) | Normal (4 / 8 ohms): 80 / 50 W, Bridge (8 ohms):170 W |
| Maximum Effective Output Power | [1-ch driven, 1 kHz, 10% THD] Normal (4 / 8 ohm): 130 / 65 W, Bridge (8 ohm): 260 W |
| Total Harmonic Distortion | [SP OUT, 20 Hz-20 kHz, 25 W, 8 ohm] 0.04%, [PRE OUT, 20 Hz-20 kHz, 1 V] 0.005% |
| Frequency Response | [1 kHz + 0 / -3 dB] PRE OUT NET / USB IN, AUX IN: 10 Hz-22 kHz, SP OUT NET / USB IN, AUX IN: 10 Hz-22 kHz |
| Signal to Noise Ratio | [PRE OUT NET / USB IN] 114 dB, [PRE OUT AUX IN] 108 dB, [SP OUT NET / USB IN] 106 dB, [SP OUT AUX IN] 104 dB |
| Rated Output Level / Output Impedance | [PRE OUT L / R, 1 kHz] 2.0 V / 470 ohm |
| Maximum Output Level | [PRE OUT L / R, 0.9% THD] 4.0 V |
| Maximum Input Signal | [PRE OUT L / R, 0.9% THD] 2.4 V |
| Gain | [SP OUT 1 V Input] 25.8 dB |
| Input Sensitivity | [1 W Power, 8 ohm] 150 mV, [MAX (50W) Power, 8 ohm] 1.0 V |
| Web Setup | Yes |
| Direct Mode | Yes |
| Monaural Downmix | Yes (stereo playback or monaural downmix selectable) |
| Compressed Music Enhancer | Yes |
| Volume Adaptive EQ | Yes |
| Volume Control | Support Terminals: PRE OUT / SP OUT, Range: Mute, -80 dB ~ 0 dB, Step: 0.5 dB |
| EQ Characteristics | [Bass] Variable Width: +6.0 dB ~ -6.0 dB / 0.5 dB step, Center Frequency: 350 Hz, [Mid] Variable Width: +6.0 dB ~ -6.0 dB / 0.5 dB step, Center Frequency: 1.1 kHz, [Treble] Variable Width: +6.0 dB ~ -6.0 dB / 0.5 dB step, Center Frequency: 3.5 kHz |
| Bass Extension | Yes |
| Power Consumption | 130 W, [All Zone On] No Signal Condition: 40 W, [All Zone Off] Chime On: 18.2 W, Cut In Power On Enable: 18.2 W |
| Standby Power Consumption | Network Standby Off: 0.2 W, Network Standby On(1 Zone): 3.2 W, Network Standby On(All Zone): 6.0 W |
| Power Management (Auto Power Standby) | 5 / 20 min, 2 / 4 / 8 / 12 hours selectable |
| Dimension (W × H × D) mm | [Table Top Mount with Adhesive Feet] 17-1/4” x 1-3/4” x 17-3/8”, [Table Top Mount with Adhesive Feet and Faceplate] 17-1/4” x 1-3/4” x 17-7/8”, [Rack Mount] 18-7/8” x 1-3/4” x 17-3/8”, [Rack Mount with Faceplate] 18-7/8” x 1-3/4” x 17-7/8” |
| Weight | 13.9 lbs. |
Buying a Yamaha Factory Refurbished product is a great way to get "as-new" products at a considerable savings. Every product has been thoroughly tested, repaired (if necessary), cleaned and otherwise renewed to original condition. Next it's repackaged with original accessories included. When you consider that a factory-renewed Yamaha product undergoes such close scrutiny for defects and workmanship, you might actually be buying something that is in many ways better than new. And for your piece of mind and protection, your purchase is covered by a full 1 year parts and labor warranty valid at any authorized Yamaha repair center (you can look-up locations online here or call 714-522-9888)
Yamaha, like all electronics manufactures, receives products returned for various reasons. In 2023 consumers returned 23 billion dollars in electronics globally, of which less than 5% were found to be defective! Once a product has been opened, it must be resold as refurbished or open box and cannot be resold as new again. The history and reason why a product was returned is not provided to us, thus we cannot provide any additional details regarding its past. All products are processed by Yamaha certified technicians, where they are fully tested, repaired (only if necessary), and retested again to ensure the highest quality control. Each unit must pass a complete battery of test before it can be titled a "Yamaha Factory Refurbished" product.
Most (not all) units are cosmetically in Mint Condition (graded a 9 or higher on a scale of 1-10). Very minor signs of wear (light surface scuffs or minor scratches) may be present, although most units show little or no signs of any usage. We DO NOT sell products that are cosmetically damaged (cracked displays, broken knobs, heavy scratches, or physically abused) unless noted in the description. Unfortunately, we cannot provide actual photos of each unit or pick the best one for anyone, as they are all randomly chosen from our factory sealed boxes.
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