Utility pedals are the ones you buy to solve a problem you can describe in a sentence: I cannot tune quietly between songs, my picking is uneven, my high-gain rig hisses, I want to play over myself. Because the problem is specific, the published spec answers the question — accuracy for a tuner, blend for a compressor, detection method for a gate, recording time for a looper.
This is also the hub with the widest spread in current draw for the least obvious reason. A BOSS TU-3 draws 20 mA — or 80 mA if you turn High Brightness on. A TC Electronic PolyTune 3 draws 100 mA, five times a TU-3 in normal mode, for a tuner. If your power supply is tight, that is a real decision and nothing about the front panel tells you.
01Tuners: accuracy is the whole spec
BOSS publishes +/- 1 cent for the TU-3. TC Electronic publishes 0.5 cent in chromatic mode and +/- 0.02 cent in strobe mode for the PolyTune 3. One cent is fine on stage and not enough for setting intonation, which is where strobe accuracy earns its keep. The other real difference is bypass: the TU-3 is buffered (which many players want anyway), a Korg Pitchblack is true bypass. The tuner roundup goes through it.
02Compressors: the missing control is the story
An MXR Dyna Comp has two knobs and no blend, so everything you play goes through the compressor. A Keeley Compressor Plus has a blend control, which lets the dry transient through while the compressed signal adds sustain underneath. That single control is the difference between "the pedal squashes" and "the pedal is inaudible until it isn't." A BOSS CS-3 sits between them: attack and tone, but no blend. The compressor roundup compares them.
03Noise gates: the loop is the feature
The BOSS NS-2 has Send and Return jacks, and they are the reason to buy it over a simpler gate. In the loop configuration the gate listens to your clean guitar signal to decide when you are playing, while muting the output of the noisy pedals. In the plain in/out configuration it listens to the distorted signal, which contains the noise, so it either chops your sustain or fails to close. The gate roundup has the wiring.
04Loopers: recording time is not the number that matters
A BOSS RC-1 gives you 12 minutes and one loop slot with a single knob. A TC Ditto gives you 5 minutes and true bypass in the smallest box that works. A BOSS RC-5 gives you 99 memories, a rhythm section and a menu you will not learn during a soundcheck. Nobody has ever run out of 5 minutes. The real choice is interface complexity, not capacity. The looper roundup is organized around that.
05EQ: the most underrated pedal in this hub
A BOSS GE-7 gives you seven bands at +/- 15 dB; an MXR 10 Band gives you ten at +/- 12 dB and runs on 18 V, not 9 V, which is the single most common power mistake made with it. An EQ in front of a drive pedal changes what the pedal clips; an EQ after it changes what you hear. Both are useful and they are not the same move. Compressor vs boost covers the related question of which pedal actually makes you louder.
