I know what you're thinking. WHAT IS THIS?!
It's basically an advanced frequency shaping unit. There's a three way switch allowing: LO, OFF, LO + HI. I used it a lot with a hollowbody bass and LOVED the results.
Below is an in-depth explanation, pulled from the internet somewhere:
The Yellow Humper was designed specifically with bass guitarists in mind. With the Humper, the musician can select a single 7 db peak or hump in the frequency response centered at 100 Hz to give the instrument a very solid bottom range in the "1" switch position. Selecting "2" will produce the same low end peak plus a 10 db peak at 2000 Hz to enhance the overtones and presence. Like the Purple Peaker, the Yellow Humper improves the signal even in the "Off' switch position due to its low 200 Output Impedance. The Yellow Humper was designed to let any bass and many keyboards sound more powerful without becoming rumbly or thumpy. Like the Peaker, it is excellent for recording with. The Humper's input impedance is 100 kOhms, and its Signal-to-Noise ratio is a very quiet 92 db.
It's basically an advanced frequency shaping unit. There's a three way switch allowing: LO, OFF, LO + HI. I used it a lot with a hollowbody bass and LOVED the results.
Below is an in-depth explanation, pulled from the internet somewhere:
The Yellow Humper was designed specifically with bass guitarists in mind. With the Humper, the musician can select a single 7 db peak or hump in the frequency response centered at 100 Hz to give the instrument a very solid bottom range in the "1" switch position. Selecting "2" will produce the same low end peak plus a 10 db peak at 2000 Hz to enhance the overtones and presence. Like the Purple Peaker, the Yellow Humper improves the signal even in the "Off' switch position due to its low 200 Output Impedance. The Yellow Humper was designed to let any bass and many keyboards sound more powerful without becoming rumbly or thumpy. Like the Peaker, it is excellent for recording with. The Humper's input impedance is 100 kOhms, and its Signal-to-Noise ratio is a very quiet 92 db.
