Studiomaster HX4-1000 | 4x425W at 4 Ohms - 1U Amp | Lightweight Digital Power with PFC

$1,134.00

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4-Channel Digital Power Amplifier

Studiomaster HX4-1000 is a high-performance 1U rackmount amplifier offering four channels of clean, efficient power in a compact, lightweight frame. Designed for demanding live sound, install, and rental applications, this digital amp balances high output with precision audio and rock-solid reliability.

Studiomaster HX4-1000 Competitive Differences

4 x 425W at 4 Ohms in just 1U rack space
Universal 90–260V power supply with Power Factor Correction (PFC)

Studiomaster HX4-1000 Description

The Studiomaster HX4-1000 is engineered for professionals who demand powerful performance in tight spaces. Delivering up to 4x425W at 4 ohms and 2x1450W bridged at 4 ohms, this amplifier is capable of handling everything from fixed installations and conferences to mobile DJ and rental systems. Its rugged, lightweight chassis makes transport easy, while the universal power supply and efficient cooling system ensure reliability under pressure. With THD+N as low as 0.02% and a 105dB signal-to-noise ratio, the HX4-1000 delivers pristine audio clarity even at high output levels. Integrated protection against overload, thermal stress, and DC output keeps your system safe, while the wide input compatibility (balanced and unbalanced) gives you flexible routing options for any setup.

Model Features

Ultra-compact 1U design
Balanced and unbalanced input support
Advanced cooling system for high-demand environments
Low distortion and high S/N ratio for clear sound
Comprehensive thermal, overload, and DC output protection

Model Specifications

Max SPL: N/A (power amp only)
Power Output: 4 x 425W @ 4Ω, 4 x 250W @ 8Ω, 4 x 725W @ 2Ω
Bridged Power: 2 x 1450W @ 4Ω, 2 x 850W @ 8Ω, 2 x 500W @ 16Ω
Voltage Gain: 33.0dB
THD+N: 0.02%
S/N Ratio: 105dB (A-weighted)
Input Sensitivity: 1Vrms
Input Impedance: 20kΩ (bal), 10kΩ (unbal)
Damping Factor: 300 (8Ω, 20Hz–100Hz)
Frequency Response: ±0.2dB (20Hz–20kHz, 8Ω)
Power Supply: 90–260VAC, 50/60Hz
Dimensions: 18.9 x 1.73 x 12.7 in (483 x 44 x 323 mm)
Weight: 12.6 lb (5.7 kg)

What's In The Box

HX4-1000 amplifier unit
Power cable
Quick start guide

Shipping

Orders ship from our northern NJ warehouse the same day if ordered by 3:30PM EST. Transit time ETA's are listed in the image below:

Return Policies

All orders come with our industry leading 90-Day return policy.

Cash Back or Store Credit available for returns within 30 days.
Store Credit available for returns within 31-90 days.

Restocking fees

Unopened Items: 5%
Opened but Mint Condition: 15%
Blemished, Missing/Damaged Packing or Accessories: 25%

Shipping Costs

Buyer is responsible for return shipping costs
If "Free" or discount shipping was provided with original order, our actual shipping cost will be deducted from the amount refunded/credited

Damages & Defects

We will swap any item reported as damaged or defective within 7 days of delivery for free. All transportation and replacement costs will be covered by us (within US48 states).