GLABS SP1250H AMPLIFIER

Output Power Stereo (RMS) – 2 x 1250W @ 8ohm

Output Power Stereo (RMS) – 2 x 1875W @ 4ohm

Output Power Stereo (RMS) – 2 x 2500W @ 2ohm

Bridge Mode (RMS) – 2500W @ 16ohm

Bridge Mode (RMS) – 3750W @ 8ohm

Bridge Mode (RMS) – 5000W @ 4ohm

Frequency Response – 10Hz – 20KHz / ±0.35dB

THD+N (20Hz-20KHz – <0.5% @ 8Ω1kHz

S/N Rate (20Hz-20 kHz) – >102dB

Crosstalk (1KHz) – >70dB

Slew Rate – >30ν/με

Damping Factor – >5000 (8Ohm) 20Hz to 100Hz

Voltage Gain – 42.5dB (0.775V:100V

Input Sensitivity – 0.775V,1V,1.4V

Input Impedance – 10K Ω balance/ 20K Ω unbalance

Input Connectors – XLR Active balanced pin1 gnd/pin 2+/pin3-

Output Connectors – 2 Neutrik NL4 Sockets / 2 input posts

Protection – short-circuit, DC, overload, overheat, ultrasonic, RF, voltage peak limit,

Operating Voltage – 110V/220V available

Fuse – F-20A

Power consumption (Idle) – <55W

Power consumption (Max) – <55W

Cicuit – Class H

Dimensions (L×W×D) – 483mm×436mm×90mm(2U)

Package (L×W×D) – 610mm×550mm×145mm

Net Weight – 26.5Kg

Gross Weight – 29Kg

Description

  • The GLABS SP1250H is a high-performance 2-channel Class H amplifier built for top-tier professional audio environments, combining raw power with pristine audio fidelity.
  • Delivers commanding output with 2 x 1250W @ 8Ω, 2 x 1875W @ 4Ω, and 2 x 2500W @ 2Ω, offering versatility across a wide range of full-range and low-frequency speaker systems.
  • In bridge mode, it provides a staggering 2500W @ 16Ω, 3750W @ 8Ω, and 5000W @ 4Ω, ideal for powering subwoofers and large-format speakers in high-SPL setups.
  • Engineered with a frequency response of 10Hz–20kHz (±0.35dB), the SP1250H ensures accurate, full-range sound reproduction for any application.
  • Boasts <0.5% THD+N @ 8Ω 1kHz and an exceptional signal-to-noise ratio >102dB, guaranteeing clean, distortion-free output at all volume levels.
  • With a slew rate >30 V/μs and damping factor >5000, it delivers outstanding transient response and tight, controlled bass even under heavy load.
  • High voltage gain of 42.5dB and switchable input sensitivity (0.775V, 1V, 1.4V) allow for flexible integration with various mixers and signal processors.
  • Professional I/O includes XLR active balanced inputs and 2 Neutrik NL4 speaker outputs, along with 2 input posts for multiple wiring options.
  • Advanced protection circuits guard against short-circuit, DC offset, thermal overload, ultrasonic interference, RF noise and peak voltage spikes, ensuring stable, long-term operation.
  • Fully compatible with global voltage standards through 110V/220V operation and protected with a F-20A fuse.
  • Energy efficient with <55W idle consumption, supporting sustainable operation even in large-scale systems (note: “<55W max” may be a typo and should be verified).
  • Built in a robust 2U rack-mount enclosure (483×436×90mm) with net weight 26.5kg, combining durability and thermal stability for continuous professional use.
  • Ideal for touring, fixed installations, auditoriums and high-output sound systems that demand uncompromising performance and reliability.

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