Impeccable Vincent SV-400 Integrated amplifier. Have original box, packing and remote control. Great amp, lots of grunt for the money and super quiet -- and sounds great too. RRP is $999: https://www.selby.com.au/vincent-sv-400-integrated-amplifier-black-sv400b.html
Can post at buyer's expense.
The weight alone shows that a solid power unit has been integrated, capable of guaranteeing stability.