I had the same setup with exception of the mullards.. I know exactly what is going on.. I have to disagree though. . The reason is not what is lacking, But what is changing. The wa7&wa7tp combo deviates from the neutrality of the HA-1 The tube sound, coupled with an elevation in bass and dynamics makes it a seductive addictive combination, But there is no way it surpasses the linear clarity and detail retrieval of the HA-1. The wa7 combo is just a different presentation which is extremely impressive but not as true to source, as the HA-1 to me. Edit: I did sell and do miss that combo.. but I couldn't keep both at time..