Yamaha MS101-4 – Compact powered monitor speaker, 30 W, with combo input and direct mic-stand mounting
The Yamaha MS101-4 is the standard model in the brand’s utility powered desktop monitor lineup, offering a compact, simple and highly effective solution for a wide range of monitoring applications. With its new, lower-profile enclosure design and 30 W amplification, it delivers a clear, powerful and reliable sound in an ultra-portable format.
Designed to handle both mic and line-level signals, the MS101-4 features a front-panel XLR/Jack 6.35 mm combo input along with additional rear connectors (stereo mini-jack and dual TRS inputs). The volume, Low and High tone controls are conveniently located on the front panel for intuitive operation.
The MS101-4 can be mounted directly on a Euro-style microphone stand thanks to its integrated 3/8-16 threaded socket (Yamaha BMS-10A adapter available separately). Its sturdy metal grille protects the 4" driver effectively, while the rear bass-reflex port ensures a compact footprint without sacrificing low-frequency performance.
Lightweight, portable and robust, the Yamaha MS101-4 is suitable for workstations, small control rooms, fixed installations, AV setups, rehearsals, or any environment requiring a compact, reliable and versatile monitor speaker.
Technical Specifications:
- Speaker type: Full-range powered monitor, bass-reflex enclosure
- Frequency response (-10 dB): 77 Hz – 20 kHz
- Maximum SPL (1 m, on-axis): 115 dB SPL
- Components: — 4" cone woofer, 1" voice coil, ferrite magnet
- Amplification: — Class-D — Dynamic power: 30 W — Continuous: 20 W — Natural cooling (fanless)
- I/O connectors:
— Front: Combo XLR/Jack input (Mic/Line)
— Rear: INPUT LINE 1 (stereo mini-jack), INPUT LINE 2 (TRS Phone), LINE OUT (TRS), AC inlet
- Impedance & sensitivity:
— Front input: LINE = 5.4 kΩ / MIC = 5.4 kΩ — Rear inputs LINE 1 & 2: 10 kΩ — Front input sensitivity: LINE = –10 dBu / MIC = –40 dBu — Front max input level: LINE = +20 dBu / MIC = –10 dBu
- Controls: Volume, Low, High, Power
- Indicator: POWER LED (green)
- Dimensions: 142 × 196 × 187 mm
- Net weight: 2.1 kg
- Mounting / Installation:
— 3/8-16 threaded socket (bottom) — 2 × M5 inserts, depth 11 mm, 60 mm spacing — Compatible with Yamaha accessories: BMS-10A, BAS-10, BWS20-190, BCS20-150 / BCS20-210
- Power consumption: — 10 W (1/8 power) — 3 W idle
- Power requirements: 100–240 V, 50/60 Hz
Key Points:
- Compact and portable monitor with 30 W power
- XLR/Jack combo input for both microphone and line sources
- Simple operation: front-panel volume + Low/High tone controls
- Sturdy metal grille protecting the 4" woofer
- Direct mic-stand mounting via integrated 3/8-16 thread
- Comprehensive connectivity with rear line inputs and TRS line output
- Lightweight and durable: only 2.1 kg, reinforced compact enclosure
