DRIVE UNITS BY MANUFACTURER:
We are the authorised UK distributor for Hiquphon and are very proud to work with Oskar Wrønding and bring Hiquphon directly to the DIY loudspeaker market in the UK.
Technical helpline: 01702 523999 or contact us

Hiquphon founder Oskar started his professional audio career in 1973 when he joined popular manufacturer Scanspeak taking up the role of production quality engineer. Scanspeak was a very busy company at the time as the early hifi boom years of the 1970's were well underway and demand for class leading drive units and new technology was high. Oskar became involved with production planning / quality control between 1973-76 and his relentless pursuit of absolute excellence culminated in him taking the lead role 'head of product design' and technical manager in 1977. As technical manager Oskar became the backbone of Scanspeak, successfully steering the company through the tough post-boom years whilst being heavily involved with developing drive unit innovations & technologies, many of which that we take for granted to this day.
The hifi industry is not immune to economic downturns and the early 1980's were extremely challenging times for many manufacturers. The then owners of Scanspeak were looking to save money by using products and services from the far east which at the time would inevitably compromise quality and affect jobs in Denmark. During these turbulent, restrictive times Oskar decided to launch his own company where he had total control over every aspect of design and production thus ensuring his products were of the highest caliber.
Hiquphon was founded / owned solely by Oskar in 1983 & continues to be so to this day.
Excellent sound is borne out of excellent design & engineering.
Oskars soft dome tweeters soon gained the enviable reputation of being the finest 20mm soft domes and were selected by Linn Products - a co-operation that lasted over 25 years and covers the majority of the classic Linn loudspeaker models.
Hiquphon exclusively produced 2 models for Linn: D20-LP-1 (1983 → ) & D20-LP-2 (1988 →).
Hiquphon tweeters are designed and analysed down to the very last minute detail with no expense spared or compromise accepted; the end result of which is a range of sweet sounding tweeters with exceptional musicality and incredibly low distortion. Each pair is thoroughly tested and pushed well beyond their response range in order to highlight any potential issues, then matched to within an incredible 0.5 dB and signed off personally by Oskar.
Oskars tweeters feature many unique innovations including heavy duty solder bucket connections; to get the best from these we have prepared a photo guide, click on the following text: Hiquphon connection photoguide.
The OW1-92 / OWII-92 can be used to directly replace the stalwart Scanspeak D2008-8511/12 and represent a significant upgrade for owners of Naim, ProAc, Rega & Spendor loudspeakers using these models.
| KAN MK1 to serial no. 24077: Scanspeak D2008/8511 >> | upgrade to | Hiquphon OWI-92 |
| SARA to serial no. 14730: Scanspeak D2008/8511 >> | upgrade to | Hiquphon OWI-92 |
| ISOBARIK to serial no. 10924: Scanspeak D2008/8511 >> | upgrade to | Hiquphon OWI-92 |
The Hiquphon OWI-92directly replaces and upgrades Linn D20-LP-1 & works well in the following models:
KAN, SARA, ISOBARIK, KELTIK, INDEX, NINKA, KEILIDH, KABER, ESPEK, AV5120, AV5140 & NEXUS**
** NEXUS used different tweeters across the production run - please contact us.
The Hiquphon OWII-92directly replaces and upgrades LinnD20-LP-2 (the close matching of OWl-92 and OWll-92 also renders these an upgrade).
All Linn product trademarks and names acknowledged & used for identification purposes only.
Hiquphon Logo © Oskar Wrønding
5.0 / 5.0
19 Reviews
5.0 / 5.0
6 Reviews
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In addition to my post from 17/11/2025, here is some information on the final status of the project: Saving the Mission 752 loudspeakers.
Once it was certain that it would be possible to revise the loudspeakers (thanks to Willy), the desire to also replace the low-midrange drivers and convert the crossover to a high-quality version quickly arose. I was fortunate enough to be able to purchase two Burmester 949 MKII midrange drivers from Audax to replace the existing low-midrange drivers (52LFHDA – still available and can be sold). They are practically identical in design, but significantly more refined and powerful. Revising the crossover proved somewhat more difficult because the values of the coils were not printed on them. However, they can be determined by measuring the originals. Mundorf resistors, coils and capacitors of the two highest quality grades were installed. These are not exactly cheap, but once the speaker is finished, the difference is clearly audible. The crossover was also modified slightly. A shunt was integrated into the high-frequency branch. Following a tip in a forum, the crossovers were also moved to the outside. They are currently still on the speaker without a housing. The metal housing provides perfect shielding. As the Willys tweeters are very efficient, they were ‘damped’ slightly. The final cost of the conversion was approximately £600. In return, the speakers now perform at a level that far exceeds their original condition. An exciting project that was only made possible by Willys – thanks to Caroline & Will ❣️
Id had these speakers for a couple of years. I got the S/H and already the tweeters weren't working when purchased. Played them for and while but parked them up hoping one day to organise tweeters. Well that day finally came and i am blown away. Easily better than my Jamo 507A's and TDL RTL 3's. I drive them with an adcom 5300 and nad as pre amp. I am in New Zealand. The turn around time was within 2 weeks. Saving up for the crossover upgrade.
This made a massive difference to my 30 year old Linn Keilidh speakers, giving them a new lease of life.
Willy's is an awesome serivce. I needed a 4" midrange replacement that is a drop in exact fit for the IMF TLS50. If you are ordering from the USA, the Monacor MSH-115, 4" is your best option. I live in Pennsylvania and it only took 5 days from the time I ordered to be delivered from the UK. Royal Mail provides tracking. I dropped in cab and was fired up shortly on the same day. Sounds great. Totally worth buying these instead of rebuilding old speakers.
Willys saved my Mission 752 speakers. The tweeters were defective. The original tweeters are no longer available, and it would have been a shame to throw away these really good speakers. I came across Willys by chance in a chat room. Even there, the company and especially the tweeters were highly praised. I contacted Willys and received a very friendly response. Ordering the speakers went smoothly. However, shipping to and from the UK is a real adventure due to ****. It is expensive, cumbersome and no fun for either side. The tweeters arrived two weeks later and were of course installed immediately. The result is truly impressive. Airy, clear highs (previously a weakness of the 752, which tended to ‘hiss’) and a sound image that really thrills me. The ‘old’ Mission 752s seem to me as if they have been swimming in a fountain of youth. Thank you for the good service and the high-quality tweeters. ❣️❣️❣️
Translated with DeepL.com (free version)
