Nearly $800 of upgrades for a $1K unit?
Seems a little excessive, but if your ears justify it, enjoy!
Not when the stock unit can compete easily with phono pre’s 2-3 times its cost. Thus why I have had no issues spending money on tube upgrades, as example (recently installed older used but well measured Dynaco/Telefunken smooth plate AX7’s in mine, that replaced Gold Lion gold pins, that replaced the stock Mullard’s).
I’ve considered the same power supply from Upscale for mine, but satisfied at the moment. Cost to do so would not make me think twice though, as I’m extremely happy with the Trumpet, and if would take it to another level? No brainer.