"Had this unit fitted and set up by Autosounds in Newcastle along with all the OE speakers replaced by Audison ones. My Z4 sounds awesome, utilising the full extent of the AP8.9bit has transformed the listening experience, a worthwhile upgrade. Thanks to Autosounds and all the team at Audison !"

Jason Harley

Russell Jennings

"Doesn't seem too powerful enough"

Chris Kermode

"Excellent unit superb sound."

Sean Kernaghan

Hayley Towler

"Great product that could be improved with accessibility the only issue. It should have Bluetooth with an app that will support adjustments, not solely relying on a PC interface to make changes."

Jason Small

"I had a standard 6 speaker system and standard head unit in my BMW and was unhappy with the sound quality. After upgrading my speakers and further research, I opted for the Audison Prima 8.9 bit. The sound quality is significantly improved and has much clearer definition and clarity, as well as overall power. I would recommend the Audison over standard stock unit and the other advantage is that it is designed as OEM integration so can be easily removed and fitted to any future car."

Douglas Fisher

Ben Benson

"awesome"

Justin Wild

"works with no noise during power up or power down which i like"

Stuart Thwaite

Chris Akehurst

"Not sure which bit of upgrade is doing what but the sound is excellent."

Ben Mann

Garry Taylor

"The sound is great......!"

COLIN LEEDER

"Exceptional sound quality. Although, it did effect the FM reception on upgraded head unit and required separate power supply to be run to amp to reduce the interference from amp"

LEE HANSON

"Awesome piece of kit. Unbelievable quality of sound and power for such a small amp. Every car should have one."

bill okine

DARREN GIBBS

MAX BRADSHAW

Glenn Wilson

"Well-balanced, rich and powerful sound"

Kostyantyn Kovalyov

dominic sinclair-moore

graham hopkins

"I am delighted with the result and can now enjoy crisp and natural music at any sound level"

Ken Pollock