Vacuum Tube - 6L6GCM-STR, Redbase, Tube Amp Doctor
The TAD 6L6GCM-STR REDBASE is Tube Amp Doctor's latest 6L6GC; designed and built to be the best 6L6 type tube ever manufactured. A high claim, but Tube Amp Doctor is sure that they have achieved exactly that.
In terms of sound, the TAD 6L6GCM-STR REDBASE produces the powerful but always defined bass response known from the legendary american built NOS RCA 6L6GC, with clear, unobtrusive and yet transparent highs. In every setting, the TAD 6L6GCM-STR REDBASE responds directly and with noticeable dynamics, from buttery soft and warm to powerful and brutal without losing any details or depth.
This makes the TAD 6L6GCM-STR an effective upgrade for every amplifier using 6L6GC or 5881 tubes; also replaces any EL37, CV586, VT115A, 6L6GA, 6L6GB, 6L6WGB, 6L6WGC, STR-440, STR-454, 6p3p, 6p3s, 6p3s-e etc.
The TAD 6L6GCM-STR REDBASE combines the structural advantages of the robust American Philips / Sylvania 6L6GC, also known as MESA 6L6GC-STR415, and the sound quality of the legendary RCA 6L6GC tubes. Silky highs, defined, deep bass and lots of headroom recommend the TAD 6L6GCM-STR REDBASE for lively clean sounds as well as a powerful broadband power amplifier for multi-channel amps.
The new TAD Redbase series combines the latest manufacturing technologies with traditional design and flawless quality. The TAD Redbase series is exclusively built on a TAD production line that has been optimized especially for the TAD Redbase series. At TAD in Germany, the tubes of the STR series receive a special, additional burn-in treatment and formatting process in preparation for the TAD Premium.Matching, which optimizes the quality of the cathode emission and opens up an exceptionally detailed sound structure.
The Classic 6L6 Sound - Excellent Tone and Maximum Lifetime!
Q: When does a power tube become a Premium Selected power tube?
A: All power tubes labeled Premium Selected have passed the following tests:
- Plate Current (PC) and Amplification (TC)
- Low Noise Test
- Microphonic Test
- Sonic Tests
- Shock Tests
- Listening Tests
- Shorts & Leakage Tests
Accessory Items:
| Single or Matched | Our Part Number | UPC/EAN |
|---|---|---|
| Single | T-6L6GCM-RB-TAD | 4251594918493 |
| Matched Pair | T-6L6GCM-RB-TAD-MP | |
| Matched Quad | T-6L6GCM-RB-TAD-MQ |
| Approximate net weight | Single version | T-6L6GCM-RB-TAD | 55 g (1.94 oz.) |
| Base | Single version | T-6L6GCM-RB-TAD | JEDEC #8ET, octal, 8-pin |
| Base Width | Single version | T-6L6GCM-RB-TAD | 35 mm |
| Cathode | Single version | T-6L6GCM-RB-TAD | Oxide-coated, unipotential |
| Cooling | Single version | T-6L6GCM-RB-TAD | Convection |
| Envelope Height | Single version | T-6L6GCM-RB-TAD | 95 mm |
| Envelope Width | Single version | T-6L6GCM-RB-TAD | 38 mm |
| Heater Current | Single version | T-6L6GCM-RB-TAD | 0.9 A |
| Max. Bulb temperature (surface hottest point) | Single version | T-6L6GCM-RB-TAD | 250° C |
| Max. Cathode-to-heater potential | Single version | T-6L6GCM-RB-TAD | 200 V |
| Max. DC cathode current | Single version | T-6L6GCM-RB-TAD | 180 mA |
| Max. DC plate voltage | Single version | T-6L6GCM-RB-TAD | 550 V |
| Max. Grid no.1 (control) voltage | Single version | T-6L6GCM-RB-TAD | -100 V |
| Max. Grid no.1 to cathode and grid no.3, grid no.2, base sleeve and heater | Single version | T-6L6GCM-RB-TAD | <14 pF |
| Max. Grid no.1 to plate | Single version | T-6L6GCM-RB-TAD | <2.1 pF |
| Max. Grid no.2 DC (screen) dissipation | Single version | T-6L6GCM-RB-TAD | 5 W |
| Max. Grid no.2 DC (screen) voltage | Single version | T-6L6GCM-RB-TAD | 500 V |
| Max. Heater Voltage (AC or DC) | Single version | T-6L6GCM-RB-TAD | 6.9 V |
| Max. Plate dissipation | Single version | T-6L6GCM-RB-TAD | 30 W |
| Max. Plate to cathode and grid no.3, grid no.2, base sleeve and heater | Single version | T-6L6GCM-RB-TAD | <0.8 pF |
| Min. Heater Voltage (AC or DC) | Single version | T-6L6GCM-RB-TAD | 5.7 V |
| Nom. Heater Voltage (AC or DC) | Single version | T-6L6GCM-RB-TAD | 6.3 V |
| Operating Position | Single version | T-6L6GCM-RB-TAD | preferably vertical |
| Total Height | Single version | T-6L6GCM-RB-TAD | 109 mm |
| Typ. Grid 1 Control Voltage | Single version | T-6L6GCM-RB-TAD | -18 V |
| Typ. Grid 2 Screen Voltage | Single version | T-6L6GCM-RB-TAD | 250 V |
| Typ. Load Resistance | Single version | T-6L6GCM-RB-TAD | 4200 Ohms |
| Typ. Maximum Signal Plate Current | Single version | T-6L6GCM-RB-TAD | 66 mA |
| Typ. Output Power at 14% distortion | Single version | T-6L6GCM-RB-TAD | 8.5 W |
| Typ. Peak AF Grid 1 Control Voltage | Single version | T-6L6GCM-RB-TAD | 18 V |
| Typ. Plate Voltage | Single version | T-6L6GCM-RB-TAD | 350 V |
| Typ. Transconductance (nominal) | Single version | T-6L6GCM-RB-TAD | 5,300 mS |
| Typ. Zero Signal Grid 2 Screen Current (avg) | Single version | T-6L6GCM-RB-TAD | 2.0 mA |
| Typ. Zero Signal Plate Current | Single version | T-6L6GCM-RB-TAD | 54 mA |
| Packaging Dimensions | Matched Pair version | T-6L6GCM-RB-TAD-MP | 3.5 in. × 1.75 in. × 4.75 in. |
| Matched Quad version | T-6L6GCM-RB-TAD-MQ | 3.5 in. × 3.5 in. × 4.75 in. | |
| Single version | T-6L6GCM-RB-TAD | 1.75 in. × 1.75 in. × 4.75 in. | |
| Weight (Packaging) | Matched Pair version | T-6L6GCM-RB-TAD-MP | 0.288 lbs. |
| Matched Quad version | T-6L6GCM-RB-TAD-MQ | 0.576 lbs. | |
| Single version | T-6L6GCM-RB-TAD | 0.144 lbs. |
| T-6L6GCM-RB-TAD - Single version | Approximate net weight | 55 g (1.94 oz.) |
| Base | JEDEC #8ET, octal, 8-pin | |
| Base Width | 35 mm | |
| Cathode | Oxide-coated, unipotential | |
| Cooling | Convection | |
| Envelope Height | 95 mm | |
| Envelope Width | 38 mm | |
| Heater Current | 0.9 A | |
| Max. Bulb temperature (surface hottest point) | 250° C | |
| Max. Cathode-to-heater potential | 200 V | |
| Max. DC cathode current | 180 mA | |
| Max. DC plate voltage | 550 V | |
| Max. Grid no.1 (control) voltage | -100 V | |
| Max. Grid no.1 to cathode and grid no.3, grid no.2, base sleeve and heater | <14 pF | |
| Max. Grid no.1 to plate | <2.1 pF | |
| Max. Grid no.2 DC (screen) dissipation | 5 W | |
| Max. Grid no.2 DC (screen) voltage | 500 V | |
| Max. Heater Voltage (AC or DC) | 6.9 V | |
| Max. Plate dissipation | 30 W | |
| Max. Plate to cathode and grid no.3, grid no.2, base sleeve and heater | <0.8 pF | |
| Min. Heater Voltage (AC or DC) | 5.7 V | |
| Nom. Heater Voltage (AC or DC) | 6.3 V | |
| Operating Position | preferably vertical | |
| Total Height | 109 mm | |
| Typ. Grid 1 Control Voltage | -18 V | |
| Typ. Grid 2 Screen Voltage | 250 V | |
| Typ. Load Resistance | 4200 Ohms | |
| Typ. Maximum Signal Plate Current | 66 mA | |
| Typ. Output Power at 14% distortion | 8.5 W | |
| Typ. Peak AF Grid 1 Control Voltage | 18 V | |
| Typ. Plate Voltage | 350 V | |
| Typ. Transconductance (nominal) | 5,300 mS | |
| Typ. Zero Signal Grid 2 Screen Current (avg) | 2.0 mA | |
| Typ. Zero Signal Plate Current | 54 mA |
 Datasheet for Single | T-6L6GCM-RB-TAD |
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