Pedal Type: Class A Tube Guitar Combo Amplifier
Controls: Volume 1, Volume 2, Tone, Speed, Depth, Standby Switch, Power Switch
Bypass Layout: No Effects Loop Bypass (Direct Vintage Circuit Topology)
Power Requirements: Standard IEC AC Cable (110V-240V regional configuration)
Current Draw: Mains Powered (No mA pedal power threshold applies)
Dimensions: 20.5 x 18.75 x 8.75 inches / 520 x 476 x 222 mm
Mid-Century Preamp Architecture and British Rock Lineage
Parallel-Linked Tube Gain Staging and 6973 Component Alchemy
The fundamental audio design of this premium tube combo reproduces the highly modified 1959 Supro amplifier circuit historically utilized on monumental British classic rock recordings. The preamp section integrates four premium 12AX7 vacuum tubes configured across two independent channels that run in a permanent parallel wiring layout. Rather than relying on standard sequential gain staging, this unique internal network allows the signal to split and simultaneously saturate both preamplifiers when using the designated combined input. The output section is driven by a matched pair of rare, military-grade 6973 power tubes operating in a pure Class A, cathode-biased configuration. This specific tube choice provides a distinctively wide midrange grind and immediate touch-responsive compression that yields rich, non-harsh asymmetric distortion as the power amp section is pushed.
Automatic Channel Blending and Traditional Power Tube Modulation
The top-mounted control interface streamlines historic routing methods through an innovative physical patch configuration. Input 1 operates as a multi-preamp summing junction, automatically tying Channel 1 and Channel 2 together in parallel so that Volume 1 and Volume 2 act as independent blending controls for a single instrument. Utilizing Input 2 isolates the second preamp circuit entirely, yielding an agile, high-headroom vintage clean voice that breaks up gracefully at the upper limits of the volume sweep. Tone shaping is managed via a shared, single-knob EQ matrix that rolls off harsh top-end transients while preserving the structural midrange punch of the enclosure. The on-board modulation utilizes a traditional, all-tube LFO circuit that modulates the bias voltage of the 6973 output tubes directly, providing an organic, multi-dimensional tremolo texture that pulses smoothly across the entire frequency spectrum.
Creative Rig Integration and Circuit Optimization
High-Impedance Parallel Blending for Single-Coil Clarity
In studio tracking environments utilizing traditional single-coil instruments, this combo provides a dense soundstage without the need for outboard booster elements. Connect a vintage-spec electric guitar directly into Input 1 to engage both preamps simultaneously. Advance Volume 1 to 2:00 to introduce a saturated, harmonically rich low-mid foundation, and dial Volume 2 to 11:00 to blend in articulate, upper-midrange pick dynamics. Set the master Tone control to 12:00 to keep the high frequencies balanced. This configuration utilizes the combined input impedance of the parallel preamps to thicken thin single-coil pickups, delivering a robust, punchy rhythm track that simulates a multi-amplifier studio setup from a single source.
Dynamic Overdrive Stacking and Organic Tremolo Depth
For expressive blues leads and classic rock soloing that require high-gain front-end saturation coupled with rhythmic spatial movement, map your gain elements straight into the isolated input path. Position an all-analog, mid-focused overdrive pedal ahead of Input 2, setting the pedal output level high and its internal drive low. Turn the amplifier’s Volume 2 knob to 3:00 to pre-saturate the 12AX7 preamp tubes, then advance the Tremolo Speed to 10:00 and Depth to 1:00. The Class A power section processes the boosted input signal smoothly, compressing the dynamic peaks of the overdrive pedal while the bias-modulated tremolo chops the saturated power tube harmonic content into an incredibly vocal, pulsing textures.
IMPORTANT OPERATIONAL AND COMPONENT MAINTENANCE WARNINGS: HIGH INTERNAL VOLTAGE HAZARDS PRESENT WITHIN THE VALVE CHASSIS. DISCONNECT THE IEC AC SOURCE LINE COMPLETELY BEFORE ATTEMPTING REPLACEMENT OF VACUUM TUBES OR INTERNAL FUSES. ALWAYS ENGAGE THE PRIMARY POWER SWITCH WITH THE STANDBY SWITCH IN THE DOWN POSITION, ALLOWING THE 12AX7 Preamp AND 6973 POWER VALVES TO WARM UP FOR A MINIMUM OF SIXTY SECONDS BEFORE INTRODUCING HIGH-VOLTAGE OPERATION. NEVER OPERATE THIS VALVE AMPLIFIER WITHOUT A VERIFIED SPEAKER IMPEDANCE LOAD ATTACHED TO THE REAR COMPONENT JACKS; RUNNING THE CIRCUIT REAR-OPEN WILL PROVOKE CATASTROPHIC FAILURE OF THE CUSTOM OUTPUT TRANSFORMER AND VOID ALL MANUFACTURER WARRANTY INDEMNITY. WARNING: THIS PRODUCT CONTAINS CHEMICALS INCLUDING LEAD, KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS, OR OTHER REPRODUCTIVE HARM. AVOID OBSTRUCTING TOP OR REAR VENTILATION GRILLES TO EVADE SEVERE THERMAL OVERLOAD CONDITIONS.
Pedal Type: Class A Tube Guitar Combo Amplifier
Controls: Volume 1, Volume 2, Tone, Speed, Depth, Standby Switch, Power Switch
Bypass Layout: No Effects Loop Bypass (Direct Vintage Circuit Topology)
Power Requirements: Standard IEC AC Cable (110V-240V regional configuration)
Current Draw: Mains Powered (No mA pedal power threshold applies)
Dimensions: 20.5 x 18.75 x 8.75 inches / 520 x 476 x 222 mm
Mid-Century Preamp Architecture and British Rock Lineage
Parallel-Linked Tube Gain Staging and 6973 Component Alchemy
The fundamental audio design of this premium tube combo reproduces the highly modified 1959 Supro amplifier circuit historically utilized on monumental British classic rock recordings. The preamp section integrates four premium 12AX7 vacuum tubes configured across two independent channels that run in a permanent parallel wiring layout. Rather than relying on standard sequential gain staging, this unique internal network allows the signal to split and simultaneously saturate both preamplifiers when using the designated combined input. The output section is driven by a matched pair of rare, military-grade 6973 power tubes operating in a pure Class A, cathode-biased configuration. This specific tube choice provides a distinctively wide midrange grind and immediate touch-responsive compression that yields rich, non-harsh asymmetric distortion as the power amp section is pushed.
Automatic Channel Blending and Traditional Power Tube Modulation
The top-mounted control interface streamlines historic routing methods through an innovative physical patch configuration. Input 1 operates as a multi-preamp summing junction, automatically tying Channel 1 and Channel 2 together in parallel so that Volume 1 and Volume 2 act as independent blending controls for a single instrument. Utilizing Input 2 isolates the second preamp circuit entirely, yielding an agile, high-headroom vintage clean voice that breaks up gracefully at the upper limits of the volume sweep. Tone shaping is managed via a shared, single-knob EQ matrix that rolls off harsh top-end transients while preserving the structural midrange punch of the enclosure. The on-board modulation utilizes a traditional, all-tube LFO circuit that modulates the bias voltage of the 6973 output tubes directly, providing an organic, multi-dimensional tremolo texture that pulses smoothly across the entire frequency spectrum.
Creative Rig Integration and Circuit Optimization
High-Impedance Parallel Blending for Single-Coil Clarity
In studio tracking environments utilizing traditional single-coil instruments, this combo provides a dense soundstage without the need for outboard booster elements. Connect a vintage-spec electric guitar directly into Input 1 to engage both preamps simultaneously. Advance Volume 1 to 2:00 to introduce a saturated, harmonically rich low-mid foundation, and dial Volume 2 to 11:00 to blend in articulate, upper-midrange pick dynamics. Set the master Tone control to 12:00 to keep the high frequencies balanced. This configuration utilizes the combined input impedance of the parallel preamps to thicken thin single-coil pickups, delivering a robust, punchy rhythm track that simulates a multi-amplifier studio setup from a single source.
Dynamic Overdrive Stacking and Organic Tremolo Depth
For expressive blues leads and classic rock soloing that require high-gain front-end saturation coupled with rhythmic spatial movement, map your gain elements straight into the isolated input path. Position an all-analog, mid-focused overdrive pedal ahead of Input 2, setting the pedal output level high and its internal drive low. Turn the amplifier’s Volume 2 knob to 3:00 to pre-saturate the 12AX7 preamp tubes, then advance the Tremolo Speed to 10:00 and Depth to 1:00. The Class A power section processes the boosted input signal smoothly, compressing the dynamic peaks of the overdrive pedal while the bias-modulated tremolo chops the saturated power tube harmonic content into an incredibly vocal, pulsing textures.
IMPORTANT OPERATIONAL AND COMPONENT MAINTENANCE WARNINGS: HIGH INTERNAL VOLTAGE HAZARDS PRESENT WITHIN THE VALVE CHASSIS. DISCONNECT THE IEC AC SOURCE LINE COMPLETELY BEFORE ATTEMPTING REPLACEMENT OF VACUUM TUBES OR INTERNAL FUSES. ALWAYS ENGAGE THE PRIMARY POWER SWITCH WITH THE STANDBY SWITCH IN THE DOWN POSITION, ALLOWING THE 12AX7 Preamp AND 6973 POWER VALVES TO WARM UP FOR A MINIMUM OF SIXTY SECONDS BEFORE INTRODUCING HIGH-VOLTAGE OPERATION. NEVER OPERATE THIS VALVE AMPLIFIER WITHOUT A VERIFIED SPEAKER IMPEDANCE LOAD ATTACHED TO THE REAR COMPONENT JACKS; RUNNING THE CIRCUIT REAR-OPEN WILL PROVOKE CATASTROPHIC FAILURE OF THE CUSTOM OUTPUT TRANSFORMER AND VOID ALL MANUFACTURER WARRANTY INDEMNITY. WARNING: THIS PRODUCT CONTAINS CHEMICALS INCLUDING LEAD, KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS, OR OTHER REPRODUCTIVE HARM. AVOID OBSTRUCTING TOP OR REAR VENTILATION GRILLES TO EVADE SEVERE THERMAL OVERLOAD CONDITIONS.
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