Only the later ones came with fans, and it was needed for people that ran them at their limits do to the heat generated. I kept mine on 24/7 for years with no problems without a fan, but idle is was only ouputing 20watts and at full tilt 120watts... so not a big draw..
Keep it on as your digital equipment sound better after being on for a at least a week
Keep it on as your digital equipment sound better after being on for a at least a week