I would upgrade the Linn Ninka first. At the same price range, try a pair of Audio Physic Yara or Spark, a pair of Harbeth HL P3E, or a pair of Dali Ikon 6. All of them are way better Ninka.
I have owned a pair of Ninka for 3 years and during which time I had made every effort to make the Ninka sound better. I even tried the "aktiv" approach recommended by Linn. none worked well and I was never happy with the sound until I changed my speaker to a pair of Audio Physic and later Harbeth.
Don't waste time on making Ninka sound better 'casue it wouldn't. The 'aktiv' approach is also just a marketing thing for Linn. A good quality pair of pre/power can beat any similarly priced 'aktiv' configuration...
I have owned a pair of Ninka for 3 years and during which time I had made every effort to make the Ninka sound better. I even tried the "aktiv" approach recommended by Linn. none worked well and I was never happy with the sound until I changed my speaker to a pair of Audio Physic and later Harbeth.
Don't waste time on making Ninka sound better 'casue it wouldn't. The 'aktiv' approach is also just a marketing thing for Linn. A good quality pair of pre/power can beat any similarly priced 'aktiv' configuration...