For background/foreground music and paging applications, the Bose Professional FreeSpace IZA 190-HZ integrated zone amplifiers are designed to deliver premium sound, provide simplified set up and easy daily operation, and offer the flexibility to expand when more loudspeakers are required. When used with FreeSpace FS2 and FS4 loudspeakers, even further sound optimization is possible through onboard selectable EQ presets.
Description
Bose FreeSpace IZA 190-HZ
For background/foreground music and paging applications, the Bose Professional FreeSpace IZA 250-LZ and IZA 190-HZ integrated zone amplifiers are designed to deliver premium sound, provide simplified set up and easy daily operation, and offer the flexibility to expand when more loudspeakers are required. When used with FreeSpace FS2 and FS4 loudspeakers, even further sound optimization is possible through onboard selectable EQ presets.
Features
Amplification for premium sound from a reliable, high quality Class-D amplifier provides optimized performance and premium sound quality through the use of internal digital signal processing
Installation made simple with set up done locally from the front and rear panels of the amplifier—no computer is required
Opti-Voice paging provides smooth automatic transition between the music and page signals
End-user friendly front panel allows users to connect devices easily, make tonal adjustments or select between two sources. Optional wall mountable Bose Professional Volume control with A/B switch user interface allows volume and source selection controls to be placed away from the amplifier for user convenience
Compact, lightweight design enables the FreeSpace integrated zone amplifier to be placed out of the way—on a table, desk, counter, shelf or in an equipment rack using the optional Rack Mount Kit accessory
Applications
Designed for a wide range of applications, including:
- Retail stores
- Restaurants and bars
- Hospitality venues
- Conference centers
- Schools
- Auxiliary zones

Technical Specifications
Amplification
Channel Separation (Crosstalk) | ≤ -60 dBV below rated power, 1 kHz |
Frequency Response | 60 Hz – 20 kHz (+0 dB/-3 dB) at 1 W, 1 kHz reference |
Power Class | Class D |
THD+N | ≤ 1% at full rated power |
Dynamic Range | 88 dB |
Number of Channels | 2 |
Rated Power, Symmetrical | 90 W at 70V, 100V |
Audio inputs, analog
Adjustment Range | -20 dB to +20 dB, line / 0 dB to +50 dB, mic/line / 0 dB to +50 dB, page / fixed, auxiliary |
Connectors | (1) RCA stereo pair, (1) XLR-1/4-in combo, (1) 4-pin Euroblock, (1) 1/8-in (3.5 mm) TRS |
Input Range | -10 dBV to +10 dBV, line / -60 dBV to +10 dBV, mic/line / -60 dBV to +10 dBV, page / 0 dBV to +10 dBV, auxiliary |
Nominal Input Level | 0 dBV, line / -40 dBV, mic/line / -40 dBV, page / 0 dBV, auxiliary |
Input Channels | 2 unbalanced, line + 1 balanced, mic/line + 1 balanced, mic (page) + 1 unbalanced, line (auxiliary) |
Input Impedance | 20 kΩ, line / 2 kΩ, mic/line / 2 kΩ, page / 20 kΩ, auxiliary |
Maximum Input Level | +10 dBV |
Sensitivity | 0 dBV, auxiliary / N/A, line, mic/line, page |
Physical
Cooling System | Natural convection |
Product Dimensions (H×W×D) | 1.8 in × 8.4 in × 12.2 in (45 mm × 214 mm × 310 mm) |
Net Weight | 7.0 lb (3.2 kg) |
Rack Spaces | 1 RU high, half rack wide |
Audio outputs, analog
Channels | 1 |
Connectors | (1) 3-pin inverted Euroblock, (1) RCA stereo pair |
Output Impedance | N/A (amplifier) / 400 Ω (auxiliary) |
Electrical
Current Draw, Inrush | 7.6 A at 120 VAC, 60 Hz / 13.9 A at 230 VAC, 50 Hz |
Mains Voltage | 100–240 VAC (±10%), 50/60 Hz |
AC Power Consumption | 15 W idle, 200 W maximum |
Mains Connector | IEC C14 inlet |
Protections | High temperature, short circuit |
Indicators and Controls
Controls, | (1) power switch, (1) input selection switch, (1) treble knob, (1) bass knob, (1) mic/line gain knob, (1) master level knob |
Controls, Rear Panel | Amplifier Mode DIP switch, Loudspeaker EQ preset selector, Input Gain (A/B/Page mic), Output trim |
LED Status Indicators | (1) power LED, (1) input clip LED |
Integrated DSP
A/D and D/A Converters | 48 kHz / 24-bit |
Audio Latency | 10.4 ms (analog input to analog output) |
Presets | Flat, Bose Professional loudspeaker presets (FreeSpace FS2C/FS2P/FS2SE/FS4CE/FS4SE) |
Processing Functions | Loudspeaker EQ, Opti-Voice EQ (paging), Dynamic EQ (low-end compensation) |
Additional information
Brand | Bose |
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Amplifier Connectivity | Aux-In, Microphone In |