Vintage Mullard 5AR4 GZ34 Fat Base f31 Vacuum Tube Rectifier Tests@NOS+

Description: Vintage Mullard 5AR4 GZ34 Fat Base f31 Vacuum Tube Rectifier. Tests @ 120%/120%+ (maxes out both testers, both sections) Made by Mullard labeled for Sonotone. Please see all photos for physical condition and test results! ~Tube Health and Performance Analysis~ ******** Technical jargon: The results pictured are the average between a B&K 707 dynamic mutual conductance (DMC) tester and Jackson 648S dynamic plate conductance (DPC) testers regularly calibrated. 55% is the minimum “good” value, 100% is the "bogey" value which is equal to what a NEW tube reads at minimum. Results above 100% represent a tube that tests at NOS+ values. Tubes are also checked for shorts, grid emission, gas/gassiness, and for microphonics (in excess of tube specifications). I do not list tubes that fail these checks. Results shown as relative (rel.) micromhos (µmhos) Each tube being sold is guaranteed to be as described. All shipments include a pair of nitrile examination gloves for installation. Terms and Conditions of this Sale: Payments are managed by eBay payments.Tube(s) shown are guaranteed to be as described and are warrantied for 30 days following receipt. If any concerns arise with the item(s), please get in touch with me. I’ll do everything I can to make it right. Please note that the silkscreening, ink, and all markings on vintage vacuum tubes are easily damaged and/or rubbed off with any sort of cleaner even water--even with finger friction alone, so handle with care! A pair of nitrile gloves is included with each shipment. Always handle 7- and 9-pin miniature tubes by the pins and tip, and octal base tubes by the base, and do not touch glass envelope with bare fingers. Should a return be needed, all silkscreening/ink/markings must be in same condition as pictured for a full refund.These are being sold to serious buyers only. Shipping: USPS shipping, well secured. Shipping cost is for postage and box. I provide full insurance on top of that, free of charge to the buyer. I will combine shipping when possible. Shipping to USA only. Thanks for looking!

Price: 178 USD

Location: Minneapolis, Minnesota

End Time: 2025-01-02T03:25:57.000Z

Shipping Cost: 5.91 USD