Luxman L-505 does not have a switch-mode power supply, it uses a regular transformer.
It is worth considerably more, therefore I would make the trade.
In a blind test, it would be impossible to distinguish the two amplifiers, so you are guaranteed to not be making a potential downgrade.
This is a win-win-win situation. Just do it.![]()
Tough one. Trade an old but rebuilt amp with unobtainium output devices, non-standard output jack spacing and a somewhat weird tone control circuit, but that sounds fantastic, for a new amp I've never hear that (from photos) also looks to have non-standard banana spacing and a switching supply, thus no headroom, plus possibly higher THD near the limits.
IMO, better the devil you know than the devil you don't!
I wouldn't go for Lux, though they have made quite nice amps in the past. Lux is not what it used to be back then.
Apart from that l 505 even with the power meters wouldn't have me tricked.
I would go definitely with 919.
...as already said by Jomark : Luxman is'nt what it used to be back then...![]()

... according to reviews .....