I was initially using the setup with Lenehan ML1+r's and there was a small hum evident. The blocks and pre-amp breathed life into the speakers, but I couldn't help but be annoyed by the hum.
I got in touch with Earle who offered to look at the amplifier. Earle was able to fix the problem in no time at all and even offered to modify the amps (a few days work) for free! Earle's support for his products is amazing and I am very happy to be a Weston customer.
I'm now using the setup with K1000 Headphones, until I have a space big enough to use speakers. The amps continue to amaze and compete with much of the upper-end hifi I have listed to.
Thanks for everything Earle!