![]() Phase inverter changed to cathodyne (concertina) type. Negative feedback and filter choke added, and the output section given fixed (grid) rather than cathode bias. the 6SC7, to nine-pin mini-tubes of the 12A(n)7 family, as well as the introduction of the floating-paraphase inverter. The D-series circuits represented Fender's shift from octal preamp tubes, e.g. Like the other larger Fender amps, the Bandmaster used cathode-biased 6L6G output tubes, a 6SC7 paraphase inverter, and two more 6SC7s in the preamp with a 5U4 rectifier. The first Bandmaster was in all respects almost identical to the Fender Pro, a dual-6L6 26-watt amp with a 1x15 speaker, with one difference: separate treble and bass controls, where the Pro like all other Fender amps to that time only had a single "Tone" knob. Transition models had this period features with smooth blonde tolex covering/sparkle gold grille Order yours today and get your amp sounding better than ever.6G7-A Feb 1961-1962: Oxblood grille 1962-July 1963 gold wheat grille Tubes for sale for Fender Bandmaster amplifier. 1978 -1980 Silverface Bandmaster Reverb Master volume 45w and 70w.1963 -1967 Blackface Bandmaster (circuits AB763).So if you have the 70W model from 1978, with master volume and push/pull boost, it has a huge power transformer and big filter caps. Later Silverface models were modified so that they were cleaner and more powerful. Due to this the Silverface Bandmaster Reverb is less powerful and breaks up earlier than the blackface Bandmaster. Meanwhile, the Silverface Bandmaster came with GZ34 (5U4GB) valve rectifier and the vibrato channel came with reverb. The Blackface had a diode rectifier, one normal channel and a vibrato channel with no reverb. Over the years, 1963-1980, the Fender Bandmaster amplifier came with many different circuits. We also have an FAQ section where you will find the answer to most questions as well as loads of hints and tips on changing your tubes. We have over 30 years experience so one of our team will always be happy to help and advise. If you have any queries about replacing your valves please drop us an email and we will get straight back to you. So replace the Valves on your Fender Bandmaster amplifier (Blackface and Silverface) and hear the difference. International shipping – we post all over the world every single day.We have 30 years experience so you know you are in safe hands.We offer a variety of shipping options with full tracking and insurance so you can order with confidence.These selected Premium Grade JJ valves deliver superior tone and performance.All of our valves are carefully selected, fully tested and digitally balanced and matched.Treat yourself to a brand new set of valves today. So restore the tone, the power and the sparkle to your guitar amplifier. Order your valves for the Fender Bandmaster below and hear the difference. 2 x 6L6GC matched power valves/power tubes.1 x ECC81 balanced for the Phase Inverter position (V6).Option 2: The Fender Bandmaster Reverb Silverface amplifier (1968 – 1980) uses: 2 x 6L6GC Matched power valves/power tubes.1 x ECC81 balanced for the Phase Inverter position (V4).3 x ECC83 preamp valves (also known as 12AX7).Option 1: The Fender Bandmaster Blackface amplifier (1963-1967) uses: So don’t pay higher prices for valves from the same factory that have simply been rebranded by other companies. Remember, JJ is one of only five valve manufacturers in the world. This is because they guarantee you get awesome tone and long life and they don’t cost a fortune. We always recommend JJ valves for Fender Bandmaster amplifier. A brand new set of valves will get your amp sounding like new again. Over time your valves will lose their tone and their power.
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