K&K Audio SE has a volume control option.
Another thought is considering you have a Hovland amp why not one of the Hovland preamps. I know its a full function preamp and has more inputs than you'll need, but it is an active linestage and would eliminate the potential issues that Mingles brought up. Should have great synergy with your amp too.
Another thought is considering you have a Hovland amp why not one of the Hovland preamps. I know its a full function preamp and has more inputs than you'll need, but it is an active linestage and would eliminate the potential issues that Mingles brought up. Should have great synergy with your amp too.