Jitter reduction devices

I've used Monarchy DIP 24/96, GW-Labs DSP, Altmann JISCO, PT P1A. In my opinion, they did make a difference, but not a remarkably appreciable one. And the "difference" in sound they made was not necessarily an "improvement." I ended up selling them all except P1A. PT P1A yielded the best improvement, but it is not a simple jitter box.

So I'm a bit skeptical about how these jitter boxes can improve one's system, but, as always, YMMV. I guess your best bet will be getting a Monarchy DIP or GW-Labs DSP from AudioAdvisor and see if it helps. If not, they have a generous return policy.

I have not tried any of the devices mentioned above. However, I have been using an Audio Alchemy DTI 2.0 and a DTI Pro for several years in 2 different systems. I have tried several different dacs and transports and have always preferred the sound of the system with the jitter reduction device included. The degree of improvement has varied from subtle to significant, but this depended on the quality of the transport and cables being used. The DTI Pro was much more effective than the DTI 2.0, even just as a jitter reduction device.

P1-A
Lens
Pro 32
Pro
Ultra Jitterbug
This is the best to last in rating. I had 2 '32's and a Lens at the same time.