Vacuum Tube - 5751, Tube Amp Doctor, Premium Selected
Low-noise Tube for Best Clean Tone!
The TAD Selected 5751 is Tube Amp Doctor's first choice for noticeably improved clarity, smoothness, and a true vintage tone character for most guitar amps! There will still be plenty of gain - so if you own a high-gain preamp that does not have these classic crunch characteristics, the 5751 tube will work wonders. In hi-fi preamps and CD players, the TAD selected 5751 will lower the noise floor and sound smoother and clearer than many 12AX7 tubes.
Especially this low-noise tube is recommended for best clean tone with big bottom, warm midrange and silky top end. Performs great for HiFi too! Replaces any 12AX7A/WA, ECC83, 7025 etc.
Q: When does a preamp tube become a Premium Selected tube?
A: All preamp tubes labeled Premium Selected have passed the following tests:
- Low Noise Test
- Microphonic Test
- Gain Test
- Sonic Tests
- Shock Tests
- Listening Tests
- Balanced Output Test
Accessory Items:
Body Height | 49.2 mm | ||
Bulb Temperature | 180°C | ||
Cathode Current (Ik) | 5 mA | ||
Cathode to Heater Voltage | ≤ 90 V | ||
D.C. Grid Voltage, negative | -50 V | ||
D.C. Grid Voltage, positive | 0 V | ||
D.C. Plate Voltage | 300 V | ||
Grid to Cathode Capacitance (cg/k) | 1.6 pF | ||
Grid to Heater Capacitance (cg/h) | 1.3 pF | ||
Grid to Plate Capacitance (ca/g) | 1.7 pF | ||
Heater Current | 0.175 / 0.375 A | ||
Heater Voltage | 6.3 / 12.6 V | ||
Item Diameter | 22.0 mm | ||
Item Height | 56.3 mm | ||
Plate Dissipation (Wa) | 1 W | ||
Plate to Cathode Capacitance | 0.3 pF |
Packaging Dimensions | 3.25 in. × 1 in. × 1 in. | ||
Weight (Packaging) | 0.035 lbs. |
Specification Sheet | All Models |
Product Reviews
It's a forward sounding tube in V1 of my Marshall. Solid tonewise. Just not my preference. A bit generic. It's missing pliable mids. Well rounded sounding tube. I prefer a mid flavored tube that brings out my Marshall amp.
Fender guys will love it. Too much. I hate Fender guys.
Replaced the 12AX7s in my VHT Special 6 Ultra with these 5751s. Also replaced the stock 6V6 with a TAD valve. I'm getting nice clean tones, really opened up the differences between pup settings on my Strat, (equipped with with SD STKs). Telecaster, (with Bill Lawrence NF pups), seems to ring a little clearer, but still with plenty of high end edge when played hard. Amp also now sounds better when using an acoustic simulator pedal, (currently a Moore "Acoustikar"). Tele is still a little too bright for this pedal, but Strat and Jazzmaster are much improved.