Audio Analogue ABsolute PA Mono Power Amplifier, Silver (Pair)

The Audio Analogue ABsolute PA Mono is a mono power amplifier from the ABsolute reference line, delivering 500 watts at 8 ohms in Class AB, with its own chassis per channel. You get a pair: two separate amplifiers, one for left, one for right.

Mono here isn't a marketing buzzword, it's a design decision. Each side gets its own block, its own power supply and its own signal path. You do this once "loud enough" has long been settled and all that's left is calm and control.

Why the ABsolute PA Mono?

Because two separate amplifiers give the speaker what a stereo amplifier inevitably has to share: full power, full current delivery, and no crosstalk between channels. The bridged amplifier runs on twelve transistor pairs per block, the layout is fully symmetrical throughout and does without a global feedback loop. Developed under the AIRTECH signature, hand-built in Italy.

What you'll hear

What stands out most is the silence between the notes. With a 118 dB signal-to-noise ratio and distortion under 0.1 percent across the entire power range, the background stays black, and the instruments stand out all the more clearly against it. Large orchestras spread out instead of collapsing into each other, basslines start and stop cleanly. And since there's still 1400 watts on tap at 2 ohms, there's practically no speaker that would make these falter.

Who is the ABsolute PA Mono for?

This is the end of the line, not the entry point — built for top-tier speakers and for listeners who want to split the drive without compromise. Straight talk: you absolutely need a preamplifier with a balanced output, because the PA Mono has only an XLR input, no RCA. You need room for two 50-kilogram blocks. And you need someone to help carry them — that's not a polite turn of phrase.

Our verdict

Amplifier building with no excuses: two blocks, 500 watts at 8 ohms, a composure you only miss once you've heard it. The trade press sees it similarly — "ABsolute PA MONO amps and ABsolute Reference line stage are versatile, boldly stepping beyond common and the usual audiophile comfort zone" (Matej Isak, Mono & Stereo, April 2026). Whether that suits your room, we'll work out together beforehand: HD Zürisee in Wädenswil, +41 44 680 22 00 or shop@hdzuerisee.ch.

Technical specifications

• Type: mono power amplifier, Class AB, without global feedback (Zero Feedback)
• Line: ABsolute reference line, designed by AIRTECH
• Output power: 500 W at 8 Ω, 800 W at 4 Ω, 1400 W at 2 Ω
• Amplifier stage: bridge configuration with 12 transistor pairs per block, fully symmetrical design
• Inputs: 1 × XLR (balanced); no RCA input
• Input impedance: 44 kΩ
• Gain: 19.5 V/V (25.8 dB)
• Signal-to-noise ratio: 118 dB (referred to 500 W)
• Distortion: < 0.1% from 1 W to 500 W at 8 Ω
• Damping factor: 45 at 8 Ω
• Configuration: mono – one amplifier per channel
• Wiring and power cable: AIRTECH
• Finish: Silver
• Warranty: 5 years from date of purchase
• Dimensions (W×H×D): 483 × 270 × 445 mm per amplifier
• Weight: 50 kg per amplifier, 100 kg the pair
• Scope of delivery: 2 mono amplifiers (one pair), power cable

Frequently Asked Questions

Do I get one amplifier or two?

Two. This listing covers a complete pair, i.e. two individual mono amplifiers — one for the left channel, one for the right. That's exactly how it ships. So you don't need to order anything extra to listen in stereo.

How much power does the ABsolute PA Mono have?

Each block delivers 500 watts at 8 ohms, 800 watts at 4 ohms and 1400 watts at 2 ohms in Class AB. So power rises as impedance drops, which points to a very robust power supply. The damping factor is 45 at 8 ohms.

What input does the PA Mono have?

Exactly one balanced XLR input with 44 kiloohms of input impedance. There's no unbalanced RCA input. So your preamplifier needs an XLR output — definitely check this beforehand, otherwise you'll end up without a connection.

How heavy are the two blocks?

Each amplifier weighs 50 kilograms, so the pair comes to around 100 kilograms. At 483 millimetres wide and 445 millimetres deep per block, you need two load-bearing, well-ventilated spots. We deliver and set the units up ourselves on request.

Why buy the ABsolute PA Mono from HD Zürisee?

Because with amplifiers of this size, planning matters more than the purchase itself: floor space, power supply, a balanced preamplifier, speaker match. We go through all that with you before anything gets ordered. After that, our technician and our delivery team take care of the rest.

Pairs well with

The PA Mono needs a preamplifier with an XLR output — you'll find the selection under Preamplifiers, the rest of the line in the Audio Analogue world. Speakers that actually deserve this much power live under Floorstanding Speakers, balanced connections under Cables & Connectors, and the source components under All Sources.