Banner. Photo by Author.

Morning Glory

JHS Morning Glory Clone - June 2020

Morning Glory

For this build, I used Pedal PCB's Morning Glory board. It is a clone of the JHS Morning Glory, which is a transparent overdrive circuit. This type of overdrive excels in the edge-of-breakup sound that is somewhere between a clean and dirty sound. It preserves the characteristics of your guitar signal and amp as opposed to other overdrives that add a distinctive mid-boost or mid-scoop. I typically use it as an always-on first stage overdrive, and stack it with a tube screamer for grittier tones.

The Circuit

Morning Glory Schematic

Photos

Morning Glory
Morning Glory Interior

Components

Resistors:

  • R1 2M2
  • R2 1M
  • R3 4K7
  • R4 3K3
  • R5 10K
  • R6 6K8
  • R7 220K
  • R8 1K
  • R9 6K8
  • R10 68K
  • R14 100K
  • R15 1M
  • R16 12K
  • R17 12K
  • R18 22K
  • R100 47K
  • R101 47K
  • R102 4K7

Capacitors:

  • C1 47n
  • C2 47p
  • C3 10n
  • C4 10n
  • C5 100n
  • C6 10n
  • C7 100n
  • C8 10n
  • C9 2u2
  • C10 470p
  • C11 10u
  • C12 100n
  • C100 100u
  • C101 100u

Diodes:

  • D1 1N914
  • D2 1N914
  • D3 1N914
  • D4 1N914
  • D100 1N5817

ICs:

  • IC1 LM833N

Transistors:

  • Q1 2N5457

Potentiometers

  • VOLUME A100K
  • TONE B25K
  • DRIVE B100K

Switches:

  • SW1 SPDT On/On