Oh man. Where do I start? The iPurifier3 and iGalvanic take the BL to a whole other level. It's not about getting rid of hiss although it will do that. It's about increased sound stage, clarity, smoothness, richness, dynamics, etc. These devices working together are worth the cost. I'm having a tough time trying to find an upgrade path that lets me hang on the the BL's warmth and richness. If you like the basic tonality and functions of your BL then simply upgrade the accessories to improve it. It may actually cost you less than upgrading the whole rig and you'll be thrilled. Trust me, the iPurifer and the iGalvanic added to your chain will put an instant grin on your face. So another $500 bucks to BL nirvana.......... AND you can take these devices with you to your next rig if in fact you find something you like better. I will say that I'd start with the iPurifier3 then the iGalvanic later if you can't afford the whole thing at once. For whatever reason, the iGalvanic by itself is not quite as impressive as when added to the iPurifier. Perhaps iFi can chime in here on why these two devices sound so good together.