Bác hỏi luôn Victor cho nó máu. see below for his email account (info@balanced.com). Thân ________________________________________ From: Victor Khomenko [mailto:info@balanced.com] Sent: Sunday, January 04, 2009 5:37 AM To: 'Tung Vu' Subject: RE: 50hz vs 60hz No, this can only be done at the factory, as the rework is rather significant. Regards, Victor ________________________________________ From: Tungvu Sent: Saturday, January 03, 2009 5:27 PM To: info@balanced.com Subject: RE: 50hz vs 60hz Dear Victor, I have VK 55 and quite happy with it. Only want to know if I can upgrade it to SE version by replacing tubes? And whether ThanhTung Audio in HN, your agent can do it? Thank you for advice. Regards,
