I've been thinking of upgrading my Linn too. My research on the internet (mostly vinyl asylum) has led me to the following upgrade path:
1. Change arm and cartridge to Origin Live 250 (check their website on why the 250 is the best arm to modify) and Shelter 501 Mk.II (TWL's recommendation) or high output Dynavector without a step-up. About $1,000.00
2. Cetech subchassis and armboard (www.cetech.co.uk). About $300.00
3. Origin Live motor and power supply. About $500.00
Unfortunately, these mods require dismantling the Linn, but I do not think that you will get the same level of improvement with external isolation devices. Also, I would not spend a lot more on the last two modifications, otherwise I would simply get a new turntable (VPI Aries, Teres, Origin Live, etc.)
1. Change arm and cartridge to Origin Live 250 (check their website on why the 250 is the best arm to modify) and Shelter 501 Mk.II (TWL's recommendation) or high output Dynavector without a step-up. About $1,000.00
2. Cetech subchassis and armboard (www.cetech.co.uk). About $300.00
3. Origin Live motor and power supply. About $500.00
Unfortunately, these mods require dismantling the Linn, but I do not think that you will get the same level of improvement with external isolation devices. Also, I would not spend a lot more on the last two modifications, otherwise I would simply get a new turntable (VPI Aries, Teres, Origin Live, etc.)