Check the listing for details. New 1x Genalex Gold Lion GZ34 / 5AR4 | One / Single Rectifier Tube | Free Ship. Condition: New. Listed at 59.95 USD. Brand New Genalex GZ34 / U77 Rectifier Tube Genalex Gold Lion vacuum tubes are legendary in the guitar and hi-fi audio industry for their power, clarity, resistance to feedback, and much more. The Gold Lion tubes are carefully engineered and crafted in Russia to outperform any tube on the market. These premium vacuum tubes make great replacement tubes, a fantastic way to upgrade your live amp, and a very popular method for getting the most out of your vintage tube guitar amplifier. Why You Should Do Business With UsComes with original packaging from the factory, as shown in the pictureVery competitive pricesFast shippingShippingTubes will be shipped with USPS Ground AdvantageMost orders are shipped within 24 hoursTracking information is included for every purchaseReturn Policy Customer satisfaction is our #1 priority. If you are not pleased with your purchase you may return your item for a refund up to 30 days after purchase. About Us We are musicians who crave awesome tones. We all know that swapping out tubes can be one of the more effective ways of improving your tone. At Tonal Tubes, we help you achieve that next level tone.