SoundQubed Q1-4500v2 Q Series Monoblock Amplifier

SoundQubed Q1-4500v2 — 4,500W Mono Amplifier | Q-Series | 18V Capable

The SoundQubed Q1-4500v2 is the amplifier that changed the game in the 4,500W market. Built on a brand-new board engineered to support up to 18V, the Q1-4500v2 delivers 4,670W RMS at 1 ohm (14.4V) — and when pushed with a high-voltage electrical system, it climbs all the way to 7,140W RMS at 18V. That’s not a typo. SoundQubed designed this amplifier around three core principles: Reliability, Affordability, and Longevity — and the Q1-4500v2 exceeds expectations on all three. Korean-built, compact, and engineered to be pushed to the limits every single day.

The Q1-4500v2 is a Class D monoblock operating across a wide 9V–18V working voltage range, with a maximum amperage draw of 800A. It features a variable low-pass filter (20–200 Hz), subsonic filter (10–50 Hz), and bass boost (0–6 dB) for precise system tuning. Input sensitivity runs from 0.15V to 5V for compatibility with virtually any head unit or DSP. With a signal-to-noise ratio greater than 94 dB and a damping factor greater than 310, the Q1-4500v2 is as clean as it is powerful. All packed into a compact 15.35" x 9.5" x 2.5" chassis.

Important: The Q1-4500v2 requires a properly upgraded electrical system to perform at its rated power. A high-output alternator, upgraded battery, and proper 0-gauge wiring are required. Consult a SoundQubed dealer or professional installer before purchasing.

Why Choose the SoundQubed Q1-4500v2?

• 4,670W RMS @ 1 Ohm (14.4V) / 7,140W @ 18V — Exceptional power output that scales dramatically with a high-voltage electrical system.
• 9V–18V Working Voltage Range — Operates across a wide voltage range, from stock electrical to full competition high-voltage builds.
• Korean-Built Board — The same stout, reliable construction found across the Q-Series lineup, engineered for daily abuse.
• Class D Efficiency — High-efficiency design minimizes heat and maximizes power delivery to your subwoofers.
• Variable LPF (20–200 Hz) + Subsonic Filter (10–50 Hz) — Precise crossover and subsonic control for optimal tuning and driver protection.
• Bass Boost 0–6 dB — Dial in the exact amount of low-end punch your build demands.
• SNR >94 dB / Damping Factor >310 — Clean, accurate signal reproduction and tight cone control even at extreme output levels.
• Compact 15.35" x 9.5" x 2.5" Chassis — Serious power in a manageable footprint — compact for a 4,500W amplifier.

Amplifier & Electrical Recommendations

Subwoofer Pairing: The Q1-4500v2 is designed to drive high-power subwoofers in the 1,500–4,500W RMS range. It pairs exceptionally well with SoundQubed’s HDX and HDS series subwoofers wired to a 1Ω final load. Use the variable low-pass filter to set your crossover point between 50–80 Hz for most ported SPL builds, and engage the subsonic filter to protect your drivers below their tuning frequency.

Electrical Requirements: To run the Q1-4500v2 at rated power, you’ll need a high-output alternator, upgraded under-hood battery, and proper 0-gauge power and ground wiring. To unlock the full 7,140W at 18V, a complete high-voltage electrical system with lithium or AGM reserve batteries is required. A dash-mounted voltmeter is strongly recommended. Consult a SoundQubed dealer or professional installer before purchasing.

Full Specifications

Frequently Asked Questions

Q: What subwoofers should I run with the Q1-4500v2?
A: Pair it with subwoofers rated at 1,500W RMS or more — SoundQubed’s HDX3.2, HDX4.2, or HDS3.3 series are ideal. Wire multiple subs to achieve a 1Ω final load for maximum power delivery.

Q: How much power does the Q1-4500v2 actually make?
A: At 14.4V it delivers 4,670W RMS at 1 ohm. Push it with a 16V system and you get 5,640W. At 18V with a full high-voltage build, it climbs to 7,140W RMS — making it one of the most power-scalable amplifiers in its class.

Q: What electrical upgrades do I need?
A: At minimum: a high-output alternator, upgraded under-hood battery, and proper 0-gauge wiring. To unlock full 18V potential, you’ll need a complete high-voltage electrical system with lithium or AGM reserve batteries and a dash-mounted voltmeter.

Q: Is the Q1-4500v2 good for daily use or competition only?
A: The Q1-4500v2 is built for both — it’s engineered to be pushed to the limits every day and handle it with ease. With the proper electrical system, it’s an outstanding daily driver amp that also competes at a high level in SPL builds.