Joseph has asked me to comment on two matters: the hole gamajo mentions marked chssis ground, and a ground hum problem some owners, including gamajo, have.
Gamajo is correct: the chassis ground is there to act as a chassis ground when the two tube phono stage is introduced, either as an internal option or as a stand alone, some time in April.
As for the open ground hum gamajo and some others have experienced, this occurs when for some reason the ground carried by the ground plug of the power cord is rendered discontinuous from the AC outlet through the power conditioner or surge protector, to the amplifier and preamplifier. This means the system does not carry a continuous ground. If one is using the balanced out, the balanced IC will carry this ground between the preamp and the amp as the third wire in the IC, but if one is using the single ended outputs, the RCA IC's only have hot and neutral, and will not. One must thus create an external ground to ground the preamp chassis to the amp chassis.
We hope to solve this problem with a rear panel switch in future models.
If you have any questions, please let me know.
