OC Boost | Rangemaster Style Germanium Boost w/ Top Cut filter and Range Control
from $129.00
JDM Pedals “OC Boost” is a compact modern recreation of the classic “Rangemaster” circuit. Our modifications include a “Range” knob, which progressively blends in more low frequencies, and a “hi cut” switch to adjust the very top end of the response. With the “Range” set fully counterclockwise, you have a classic treble boost. This effect was popularized in the 60’s when British made amps were voiced fairly "dark”. Boosting the signal level while accentuating the treble created a one-two punch of increased clarity and a boosted signal, overdriving the input stage of the amp, and creating singing sustain.Clapton used the treble boost style Rangemaster for his immortal “Beano” sound, whereas Tony Iommi of Black Sabbath used a modified “full range boost” to craft proto-metal sounds. Our boost features an adjustable EQ range, from full-range to treble boost so you have those classics plus many shades in between.The top cut switch has three settings - Center is off. That's the classic Rangemaster. "Less" cuts just a bit of the highest frequencies, many of which are above the guitar's typical frequency range. This means that mostly noise and interference are cut. This is useful in situations where interference, line noise, etc get into your signal chain. "More" cut digs a bit deeper, and "cools off" some of the harsh treble and upper midrange frequencies. I find this useful when stacking the boost along with fuzz or overdrives, or when you just want to get an accentuated midrange response. Almost a "cocked wah" kind of sound.** Our standard model uses a vintage germanium transistor from our "not famous but great sounding" supplies. Usually an ACY23, ASY26, or Soviet MP series transistor. We do have a limited stock of black glass OC71, OC44, and OC43 transistors. These were the originals used in vintage Rangemaster units. They are rare to find and even when we acquire a supply, many have gone bye-bye since they were built back in the 60's. So we test them in circuit and use only those that have the proper gain, acceptable leakage current, and operate quietly. Hence the increased cost for "Black Glass" vs. the standard model. best,
joe
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JDM Pedals “OC Boost” is a compact modern recreation of the classic “Rangemaster” circuit. Our modifications include a “Range” knob, which progressively blends in more low frequencies, and a “hi cut” switch to adjust the very top end of the response. With the “Range” set fully counterclockwise, you have a classic treble boost. This effect was popularized in the 60’s when British made amps were voiced fairly "dark”. Boosting the signal level while accentuating the treble created a one-two punch of increased clarity and a boosted signal, overdriving the input stage of the amp, and creating singing sustain.Clapton used the treble boost style Rangemaster for his immortal “Beano” sound, whereas Tony Iommi of Black Sabbath used a modified “full range boost” to craft proto-metal sounds. Our boost features an adjustable EQ range, from full-range to treble boost so you have those classics plus many shades in between.The top cut switch has three settings - Center is off. That's the classic Rangemaster. "Less" cuts just a bit of the highest frequencies, many of which are above the guitar's typical frequency range. This means that mostly noise and interference are cut. This is useful in situations where interference, line noise, etc get into your signal chain. "More" cut digs a bit deeper, and "cools off" some of the harsh treble and upper midrange frequencies. I find this useful when stacking the boost along with fuzz or overdrives, or when you just want to get an accentuated midrange response. Almost a "cocked wah" kind of sound.** Our standard model uses a vintage germanium transistor from our "not famous but great sounding" supplies. Usually an ACY23, ASY26, or Soviet MP series transistor. We do have a limited stock of black glass OC71, OC44, and OC43 transistors. These were the originals used in vintage Rangemaster units. They are rare to find and even when we acquire a supply, many have gone bye-bye since they were built back in the 60's. So we test them in circuit and use only those that have the proper gain, acceptable leakage current, and operate quietly. Hence the increased cost for "Black Glass" vs. the standard model. best,
joe
JDM Pedals “OC Boost” is a compact modern recreation of the classic “Rangemaster” circuit. Our modifications include a “Range” knob, which progressively blends in more low frequencies, and a “hi cut” switch to adjust the very top end of the response. With the “Range” set fully counterclockwise, you have a classic treble boost. This effect was popularized in the 60’s when British made amps were voiced fairly "dark”. Boosting the signal level while accentuating the treble created a one-two punch of increased clarity and a boosted signal, overdriving the input stage of the amp, and creating singing sustain.Clapton used the treble boost style Rangemaster for his immortal “Beano” sound, whereas Tony Iommi of Black Sabbath used a modified “full range boost” to craft proto-metal sounds. Our boost features an adjustable EQ range, from full-range to treble boost so you have those classics plus many shades in between.The top cut switch has three settings - Center is off. That's the classic Rangemaster. "Less" cuts just a bit of the highest frequencies, many of which are above the guitar's typical frequency range. This means that mostly noise and interference are cut. This is useful in situations where interference, line noise, etc get into your signal chain. "More" cut digs a bit deeper, and "cools off" some of the harsh treble and upper midrange frequencies. I find this useful when stacking the boost along with fuzz or overdrives, or when you just want to get an accentuated midrange response. Almost a "cocked wah" kind of sound.** Our standard model uses a vintage germanium transistor from our "not famous but great sounding" supplies. Usually an ACY23, ASY26, or Soviet MP series transistor. We do have a limited stock of black glass OC71, OC44, and OC43 transistors. These were the originals used in vintage Rangemaster units. They are rare to find and even when we acquire a supply, many have gone bye-bye since they were built back in the 60's. So we test them in circuit and use only those that have the proper gain, acceptable leakage current, and operate quietly. Hence the increased cost for "Black Glass" vs. the standard model. best,
joe