Hi,
I have an eap 1370 and I'm trying to figure out how to make 
``mixerctl <var>++'' work correctly:

% mixerctl -a                                                               [~]
outputs.master=192,192
inputs.dac=200,200
inputs.fmsynth=0,0
inputs.cd=192,192
inputs.line=176,176
inputs.aux=176,176
inputs.mic=96
inputs.mic.preamp=on
record.source=mic
inputs.source=mic,cd,line,fmsynth,aux,dac
% mixerctl -w inputs.dac++                                                  [~]
inputs.dac: 200,200 -> 200,200
% mixerctl -w inputs.dac+=8                                              [~]
inputs.dac: 200,200 -> 208,208
% mixerctl -w inputs.dac--                                                  [~]
inputs.dac: 208,208 -> 200,200
% mixerctl -w inputs.dac--                                                  [~]
inputs.dac: 200,200 -> 192,192
% mixerctl -w inputs.dac--                                                  [~]
inputs.dac: 192,192 -> 184,184

My card is:
eap0 at pci0 dev 12 function 0: Ensoniq AudioPCI (rev. 0x00)
eap0: interrupting at ioapic0 pin 17 (irq 10)

Any idea of what migth be going on ?