What amp?
If it needed a fan, they would have built one in, or stated so in the literature/specs. Enclosed, trapped heat, yes, but
I would never add a fan if I could re-arrange for an 'open air' arrangement.
My Cayin A88T has 4 KT88's, 2 6sn7, 2 6sl7.
All of it's components are designed to operate without a fan, it's tube spacing determined by testing. It has no bottom vents, it's own feet for designed bottom clearance, a ventilated tube cover (I leave it off).
It is on the top in open air, no trapped heat, no fan needed.
If it needed a fan, they would have built one in, or stated so in the literature/specs. Enclosed, trapped heat, yes, but
I would never add a fan if I could re-arrange for an 'open air' arrangement.
My Cayin A88T has 4 KT88's, 2 6sn7, 2 6sl7.
All of it's components are designed to operate without a fan, it's tube spacing determined by testing. It has no bottom vents, it's own feet for designed bottom clearance, a ventilated tube cover (I leave it off).
It is on the top in open air, no trapped heat, no fan needed.