Lowering rails from 16.7 to 15VDC, a few mA less bias, Vregs a little warmer but still a finger burner.

What is typical output stage bias current? I got the Yuanjing Lehmann clone (from eBay) and just started digging into it. Rails are +/-16.7VDC and 53mA bias current; heatsinks are running 70°C which seems a bit too toasty. I could lower the rails to +/-15VDC or ?

Great price but a few downfalls: The DIP to SMT adapter boards they use aren't so good for hi-fi. No decoupling capacitors near the DAC, long traces etc.