NAT Audio Transmitter Monoblocks with Amperex tubes and SR Blue Fuses (Reduced)

NAT Audio Transmitter monoblocks with pure balanced input Upgrade and tube cage. NAT Transmitter received a top score of 140 out of 140 in Audio.de mag (Germany magazine review). Includes a set of NOS RTC and rare NOS Amperex 1750/GB5 power tubes valued at $1K. Will include an extra set of NOS input tubes. Includes four Synergistic Research Blue fuses, two per monoblock that retail for $600. Includes wood crate and manual. Would prefer local pick up but would drive up to 300 miles to deliver. For local sale, will include maple butcher block amp stands. Buyer to pay shipping and PayPal. - single-ended pure class A mono block power amplifier - zero global feedback - all triode configuration - short signal path - no inter-stage transformer - output section-direct heated triode connected type Philips (or other western manufacturer equivalent) QB5/1750 (N.O.S.) output tube - driver section - 6N1P-EV & 6N6P/6N30P tubes by military grade and (N.O.S.) - long life grade - hand wound output transformer (custom designed for NAT) - hand wound with silent operation power transformer (custom designed for NAT) - additional polypropylene capacitors in power supply for output tube - regulated power supply for all stages (including the output one) - automatic bias current control for the output tube with long term stability - soft start operate to improve reliability - hand assembled all modulated chassis - high mass Schutzinger laboratory grade output connectors - gold plated PTFE insulated RCA input connector custom ordered from NAT - extensively used computer numeric control machines (CNC) - 4/5" (20mm) thick quadruple aluminum front panel - cover cage (optional)