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VOLDRIVEBASSMIDTREBGAIN

1590BB2 · 6 knobs

GuitarPCB

NostalgiTone Crazy Train Dual Combo PCB set: Capture the Legendary Sound

Category
Other
Controls
Vol · Drive · Bass · Mid · Treb · Gain
Price
$13.95in stock

From the vendor

The NostalgiTone Crazy Train is ready to deliver the iconic tones of Randy Rhoads. Together, they perfectly recreate the blistering sound that defined a generation of rock.

Included with each Dual Combo purchase. – (2) Mainboards, (2) pin headers, (1) Dual wiring board.

Description

PCB set only – Enclosure and components not included.

Introducing the NostalgiTone Crazy Train Combo, a Dual Combo that combines two iconic circuits to capture the legendary sound of Randy Rhoads. This Combo features the “British” and “Plexamp” circuits, designed to work in perfect harmony to recreate the searing tones that defined an era of rock.

The “British” circuit features a Marshall-style preamp and tone stack. It delivers the classic British crunch and dynamic response that formed the backbone of Randy Rhoads’ sound. Whether you are playing rhythm or lead, this circuit offers the rich, harmonic complexity and punchy midrange that brings it to life.

The “Plexamp” circuit serves as a preamplifier boost, inspired by the legendary Dist+ Randy used to push his Marshall amplifier into distortion. Going a step further, this circuit includes an additional dual layer of EQ to shape the tone even more, delivering the extra edge and clarity that made Randy’s sound so distinctive. Reverse the order (Boost second) for an entirely different set of useful tones.

Key Features:

• Authentic Marshall-style British preamp and tone stack with adjustable Bass, Mids, and Highs for precise tonal control.

• Plexamp is used as a Preamp boost for soaring solos and powerful riffs, equally effective as a standalone feature.

• Built-in order switching for endless tonal possibilities, allowing you to easily reverse the signal path.

(Use a 3PDT On/On short shaft / stubby switch for order switching)

PCB set only – Enclosure and components not included.

Elevate your tone with the NostalgiTone “Dual Combo” series from GuitarPCB.

Designed for a 1590BB2 enclosure, featuring the same dimensions as a 1590BB but with 125B clearance.

Tayda 1590BB2 Enclosure Options Link

Crazy Train Combo Build Document

1590BB2 size (Drilled for dual wiring board mounted LEDs) – Drilled Enclosure Link

Courtesy Artwork PDF suitable for Tayda UV.

Courtesy Artwork PNG suitable for Decals.

Courtesy Artwork SVG suitable for Editing.

Schematic

The schematic is in the vendor's build document, page 2. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 38 rows

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RefValueNormalizedTypeNotes
Resistors 15
R11M1MOCR
R1315k15kOCR
R21k1kOCR
R1410k10kOCR
R31M1MOCR
R41k1kOCR
R1622k22kOCR
R510k10kOCR
R1722k22kOCR
R61M1MOCR
R7470R470OCR
R86k86.8kOCR
R1068k68kOCR
R112k22.2kOCR
R122k22.2kOCR
Capacitors 12
C1010n10nOCR
C112n22.2nOCR
C122n22nOCR
C132u22.2uOCR
C21n1nOCR
C1422n22nOCR
C3100pF100pOCR
C15100uF100uOCR
C4220n220nOCR
C16100n100nOCR
C5100n100nOCR
C17100n100nOCR
Diodes 4
D31N58171N5817OCR
D11N40011N4001OCR
D21N9141N914OCR
D41N9141N914OCR
ICs 1
IC1LM833LM833OCR
Potentiometers 6
VOLA100KA100kPotentiometerOCR
DRIVEB100KB100kPotentiometerOCR
BASSB25KB25kPotentiometerOCR
MIDB25KB25kPotentiometerOCR
TREBB100KB100kPotentiometerOCR
GAINA500KA500kPotentiometerOCR