Bose FreeSpace ZA250LZ ZoneAmplifier

The Bose® FreeSpace® ZA 250-LZ zone amplifier delivers premium sound quality and reliable amplification, ideal for expanding sound systems in commercial and professional audio installations.

Key Features

• Premium sound quality from a high-quality Class-D amplifier designed for loudspeaker system expansion
• Expandable amplification when paired with FreeSpace IZA 250-LZ or IZA 190-HZ integrated zone amplifiers, allowing both to function as one system
• Compact, lightweight design suitable for placement on tables, desks, shelves, or in equipment racks with an optional Rack Mount Kit
• Two models available offering 4/8 Ω or 70/100 V output options for flexible installation requirements

Specifications

Amplifier Power
2 x 50 W @ 4 Ω, 2 x 25 W @ 8 Ω
1 x 90 W @ 70/100 V

Frequency Response
FreeSpace® ZA 250-LZ: 20 Hz - 20 kHz (+0/-3 dB, @ 1 W reference 1 kHz)
FreeSpace® ZA 190-HZ: 60 Hz - 20 kHz (+0/-3 dB, @ 1 W reference 1 kHz)

Total Harmonic Distortion + Noise (THD+N)
FreeSpace® ZA 250-LZ: ≤0.3% (at full rated power)
FreeSpace® ZA 190-HZ: ≤1% (at full rated power)

Dynamic Range
Both models: 88 dB

Input Channels
1 Unbalanced

Physical

Rack Space Units
1 RU high, half rack wide

Dimensions (Enclosure only)
45 mm H x 214 mm W x 302 mm D (1.8" x 8.4" x 11.9")

Net Weight
FreeSpace® ZA 250-LZ: 2.0 kg (4.4 lb)
FreeSpace® ZA 190-HZ: 3.0 kg (6.7 lb)

Cooling System
Natural convection