Amp first approach to building a system, anyone ?

Room treatment would come first for me.... If the room has sound bouncing all over the place off of flat reflective surfaces, for example, you can spend all you want on gear and nothing is going to sound very good. Of course, this is not an issue with a headphone system. 

Never ever ever has a Room undergone room treatment as the first approach to creating a Audio System.

Over in the UK VAC Amp's do not appear too often, but unusual as it is, there are Two different VAC Models used by Members of my local HiFi Group.

One, which is a older released model I have been demo'd on a few occasions and the other I have not heard in .

The one I am familiar with is superseded by a 300B Low Watt Power Amp'.

Personal Preference for an End Sound is exponentially varied across individuals who enjoy purposely creating a system to experience recorded music.

One persons maxed out in Transparency, " That's all I can take" is to another, a noticeably Rich Tone of produced sounds. I witness this regularly when at demo's with a large Group, the assessments voiced are sometimes total opposites in the description.

Individuals are with differing levels of sensitivity / tolerance to certain presentations of sound within a small space. In a Large Spacious listening environment, there is much much less, if any difficulties with tolerating the sound produced.   

Personal preferences definitely vary wildly, and I mean among people with good hearing, but when the sound is excellent everyone will agree with that regardless of the preferences.

Yeah, room tuning comes much later, not at all in the beginning.

The simple truth is, there is for some a Journey to be taken, where experiences of what can be achieved are crucial. 

Learning as the result of the experiences had, shapes the person towards what they are really aiming for as a destination.

When the Pupil is ready the teacher will reveal themselves.

In my case, nearly 40 years of interest in using a Audio System for owned recorded music, has introduced me to 100's is not a few thousand designs.

Some of the designs presented at intervals by individuals much more learned than I, have become the adopted design used by myself.

The Teachers met that have been instrumental in my making choices for a change, have remained friends since the first encounter. Sadly some are passed, and I proudly use their legacy and have no shame in introducing others on their Journey to it.

For this reason I am unfamiliar with a Brand as an OEM model, apart from a CDT in use in my system for many many years.

Cart's - Phon's - DAC - Pre Amp - Power Amp - Speakers are all bespoke/custom and certain devices are quite unrecognisable to what may have once been the original design for it.

The Room Acoustic Treatment has been a biggy for many many years but undertaken as a personal preference for the selection/methodology of treatments. With the New Speakers being such an attraction in use, there is REW Software and supporting tasks to get the very best in relation to what the data recommends being planned for the next few weeks to take place. I am waiting to be informed when a individual who really knows their stuff can visit. I am looking forward to learn my achievements and have the new education in this area.

Seems if amp first, much experience with that amp is important.

I’m not very tube experienced, so I purchased neutral speakers for both SS and flea watt tube so I can better hear and learn sonic differences when tube rolling.