Mark is a great guy and a trustworthy seller! He happily shipped out the Lorenz tubes via Fedex as I requested and kept me informed every step of the way. The rare tubes arrived today well-packed and in fine shape. I could not be happier, Thank you!!!

Mark was a super nice guy. Brought his Macbook and Fiio E10 for me to audition the Sennheiser before purchasing them. Would definitely deal with Mark again in the future. Thanks for the new toy!