@ezstreams My RAAL SR1b earphone is essentially 2 speakers hanging from my ears. I hate headphone sound and the SR1b is not like headphones and very similar to 2-channel.
The best headphone amp for the SR1b is the VM-1a and it cost $7k, I sold that amp recently because there is a new 2-channel adapter from RAAL ($800) that allows you to get very close to the $7 k amp with a 2-channel amp. Now your 2-channel just needs to be up to the task.
One of the very best amps I had on the SR1b was the KRELL k-300i integrated amp. The KRELL is likely similar to the Primaluna Dialogue you own.
I do not have too much experience with other headphones so when I say the SR1b is the best phone out there it does not carry much weight. However, there are a lot of folks on Head-fi.com who own the very best and now consider the SR1b either the best or in the small cohort of the best. The negative comment on the SR1a in comparison to other top phones is that it does not have massive bass, for me that is a feature and not a bug. I am comparing against phones that cost any amount of money.
True Ribbon Headphones | RAAL-requisite (raalrequisite.com)
The adapter you want to get to use with the Prima Luna is the RAAL TI-1b.
TI-1b • RAAL-requisite (raalrequisite.com)
If you want more info send me a DM and I will give you more options. Over the past 4 years I must have spent close to $40k getting these to sound the best, with amp rolling, speaker cables, etc... I am now using a Schitt Aegir amp ($800) to drive my SR1b. Not because of the price, but the sound.
BTW - I just saw this last sentence
Or should i go the route of chucking all but the Perspectives and the Nucleus and invest in a high quality Roon approved integrated amp with built in DAC/Streamer?
The KRELL K-300i is one such integrated amp. One of the very best integrated amps around. Buttery smooth Class A sound and so enjoyable.