Though sometimes, depending on the recorded sound, the fixed Q can be a little tight for my liking. The Great River 32EQ, which is one of my favorite all-around eqs, is just fine on guitar as well. The Devils are pretty intense in that regard.

Very Neve-esque, lots of bite and crunch. The Chandler Little Devil is great on guitars too. For a guitar that you desire to be more creamy and rounded and not necessarily edgy (like perhaps a blues guitar etc), the A would be great. The hand-wired A and the B are different animals, both excellent, pick the one that fits the situation. Though if a particular recorded guitar happens to be a bit overly harsh or cutting, I might stick a 550A on it to round it off a bit. The 550B (5500, etc) retains the bite and even gives you a bit of crunch. The 550A hand-wired reissue (now offered as the Saul Walker Edition) has way more color, it's smoother and creamier, not exactly what I reach for if I want edgy, biting, super heavy distorted electric guitars. I can't confirm or deny.API 550B is king. Some say the reissue 550A's sound somehow better. I have never tracked with it and said 'dang, if only there were more options in the high-mids'. For a distorted tone: set the gain control medium-high, and the master volume control low-medium.The 550B has settings for 800k, 1k, 1.5k, 2.5k, 3k and 5k.For a gritty, overdriven tone: set the gain control low-medium and the master volume control low.For a clean tone: set the gain control low, and the master volume control high.It is important to adjust this before altering the volume, as the gain control feeds into the volume in an amp.

Most bass amplifiers will also have a setting to control distortion, this is usually termed either gain or drive. Turning the EQ/ tone control clockwise to a higher setting will play more emphasis on the treble and less on the bass.Turning the EQ/ tone control anti-clockwise to a lower setting will play more emphasis on the bass and less on the treble.This allows you to shape the tone, causing it to sound sharper, or more mellow. On some amplifiers, the bass, mids and treble controls are combined into a single control, usually called вЂњEQвЂќ or вЂњtoneвЂќ. However, for most songs where the bass is not a focus, the treble setting will be set low-medium. This allows the sound of the bass guitar to cut through more, rather than blend into the background. This makes different notes to blend together more.ДЇor songs where the bass is the focus and perhaps includes a bassline riff which is more prominent than the guitar, you will likely need a higher treble setting. Low treble settings will make the tone warmer and more mellow.This allows distinct notes to be heard more individually. High treble settings make the tone brighter, sharper and crisper.The treble control on a bass amplifier controls the upper-range frequencies. For a balanced setting, you will usually require them both to be on midway. Essentially, these allow you to control whether you want to play emphasis on the bass or the treble. Some bass amps will have the mids setting split into two controls: low-mids, and high-mids. A higher mids setting will help to thicken the tone. However, you may need to increase the mids setting if the tone sounds too thin and weak. This balance is what helps the band to sound cohesive, and ensures that certain instruments donвЂ™t overpower the overall tone. Generally, bass guitars provide the low-end frequencies, guitars provide the mid-range frequencies, and the vocalist will provide the high-range frequencies. You should avoid turning the mids too high, as this can start to interfere with the sound of the guitars. The mids setting controls the, you guessed it, mid-range frequencies. Decrease the bass setting if the tone sounds too heavy or вЂњboomyвЂќ.Increase the bass setting if the tone sound thin.Since bass amplifiers already are designed to amplify the low-end frequencies produced by a bass guitar, the bass setting does not always need to be turned up. So bass amps need to crank the bass up? Well, not exactly.

It goes without saying, this is probably the most important setting on your bass amp.

Mids guitar