300B
In the last two years, the available choices in 300B output tubes for one's low-wattage single-ended power amplifier have become an embarrassment of riches. If we include the souped-up versions—which, in fact, deviate from the original 1930s Western Electric (WE) specifications—the number of 300Bs to choose from now includes about 15 different brands and types.
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YSA300MB 300B Tube Monoblock Amplifier Amp TANGO output | US $2,250.00 | 
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VAC 3030 300b 6SN7 Tube Power Amplifier Magnequest | US $545.00 |
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Pair NOS 77 / 310B Tubes for Western Electric 300B 2A3 | US $34.95 |
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100mA mA meter for BIAS 300B 2A3 6L6 EL34 6550 Tube Amp | US $15.90 |
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4 pcs of NOS 4 pins tube' s socket for 2A3 , 300B tube | US $22.00 |
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8, Locking Socket for 300B 2A3 572B 811 Valve Tube,1BG | US $128.00 |
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2, Locking Socket for 300B 2A3 572B 811 Valve Tube,1BG | US $42.99 |
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8, Locking Socket for 300B 2A3 572B 811 Valve Tube,1B | US $113.00 |
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2, Locking Socket for 300B 2A3 572B 811 Valve Tube,1B | US $39.99 |
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100mA PANEL METER FOR 45 50 2A3 300B TUBE AMPLIFIER! | US $8.99 |
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Western Electric 300B Electron Tubes - Matched Pair | US $510.00 |
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NOS Western Electric 300B power tube pair 9552 | US $609.00 |
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300B Tubes (pair) Billington Gold | US $56.00 |
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300B Tubes (pair) | US $20.50 |
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4 PIN Ceramic Tube Socket Solder 300B 2A3 - 2PCS | US $1.99 |
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EL34 300B 100W stereo push pull Tube amplifier Chassis | US $99.50 |
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The Fisher sa 300B sa300-B Cage tube amp SA-300-B | US $161.50 |
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MEIXING MINGDA MC300-D 300B TUBE MONOBLOCKS BRAND NEW | US $1,399.00 |
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Premium Ceramic/Gold 4 PIN TOP Mnt Tube Socket for 300B | US $2.59 |
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2 x 6N30P-DR nos " super tube " ultra rare / 6922 300B | US $89.00 |
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