{"product_id":"od9-overdrive-nine-series-drive-pedal","title":"Maxon OD9 Overdrive Nine Series Drive Pedal","description":"\u003cp\u003eWhile the OD808 may have been the first overdrive circuit of its kind, it was the OD-9 that cemented this sound in the history of Rock \u0026amp; Roll guitar.\u003c\/p\u003e \u003cp\u003eLooking at the OD-9’s circuit, you’ll realize that this is not some redesign being cleverly marketed as a reissue – this is THE original OD-9 (TS-9) circuit, yet with the addition of true bypass switching.  Even the PC board is the same one that Maxon’s been using for the past 30+ years, complete with empty slots where parts for the FET switching circuit have been left out!\u003c\/p\u003e \u003cp\u003eLike the original, the current production OD-9 features the NJM (JRC) 4558D Op Amp – an essential component for authentic “TS” tone.  The NJM is smoother sounding and less compressed than other Op Amps, offering superior sound quality with low noise.\u003c\/p\u003e \u003cp\u003eThe absence of the FET switching circuit gives the OD-9 some added output and a slightly more open sound than the OD808, making it perfect for the classic rock tones that it helped to define.\u003c\/p\u003e \u003cp\u003eIf your future plans include a meteoric rise to rock \u0026amp; roll stardom, then rely on the legendary tones of the OD-9 to fuel your ascent.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eTech Talk\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eInput is fed into a 2SC1815 emitter\/follower transistor to optimize the signal’s impedance structure.  From here it’s on to the first section of an NJM 4558D Op Amp – NJM is the company formerly known as the Japan Radio Corporation (JRC) – the legendary manufacturer that designed and built tons of these components in the late 70’s\/early 80’s.\u003c\/p\u003e \u003cp\u003eIn this non-inverting Op Amp there are diodes in the feedback loop that clip the signal gradually as well as a High-Pass filter that keeps low frequencies from being distorted as much as high frequencies – the classic “808” configuration that creates the tone we all know and love.\u003c\/p\u003e \u003cp\u003eAfter this is a passive LP filter and then an active tone stage that uses the other half of the Op Amp to create a HP filter that brings back frequencies cut by the inter-stage LP filter.  After the tone stage it’s through the volume pot, another E\/F 2SC1815 to provide a low impedance output and then the true bypass switch.\u003c\/p\u003e \u003cp\u003eThe OD-9 features Mechanical True Bypass switching via a Fujisoku 4PDT switch – input signal is sent to ground when bypassed.\u003c\/p\u003e","brand":"Maxon","offers":[{"title":"Default Title","offer_id":54968552751446,"sku":"MAXOD-9O","price":115.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/5693\/3206\/files\/1470138068-22691300_ea0ad0df-d708-4e53-9efd-e8f7a87ad9fc.jpg?v=1786545162","url":"https:\/\/soundaffects.com\/products\/od9-overdrive-nine-series-drive-pedal","provider":"Sound Affects","version":"1.0","type":"link"}