The Line 6 Echo Pro is a rack-mount delay unit, described by Line 6 as the Echo Pro Studio Modeler. Released in 2002, it puts the delay models of the Line 6 DL4 Delay Modeler into a studio rack format: MusicRadar's Michael Astley-Brown notes that "The Echo Pro rack unit is released, featuring the DL4's models"1. Line 6 states plainly that "Echo Pro is no longer made," so it is a used-market item today2.
Delay models
As a Studio Modeler, the Echo Pro's models are based on a list of classic delays and echo machines, as given by Line 62:
- Maestro EP-1 Tube Echoplex
- Maestro EP-3 Echoplex
- Roland RE-101 Space Echo
- Sweep Echo (filter-swept delay)
- Boss DM-2 Analog Delay
- Electro-Harmonix Deluxe Memoryman
- Lo Res Delay (variable from 24 to 6 bits)
- Digital Delay
- Digital Delay with Modulation
- Magnetic Platter Echo
- Stereo Delays
- Ping Pong
- Reverse (Just Hendrix, reversed)
- Dynamic Delay (t.c. electronic 2290)
- Auto-Volume Echo
- 60 Second Loop Sampler
That last model means the unit also works as a loop sampler, and the Lo Res Delay runs at a resolution variable from 24 to 6 bits2.
Connections and power
The Echo Pro is built for studio and stage patching. Its connections and level controls, per Line 62:
| Connection or control | Detail |
|---|---|
| Inputs and outputs | XLR (balanced) and 1/4 inch (unbalanced) |
| Stereo in/out | TRS stereo in/out for convenient effects loop connectivity |
| Level controls | Input/Output Level controls |
| Power | Universal power supply |
The balanced XLR jacks are the main difference from a guitar pedal: the Echo Pro can feed a mixing console or interface directly without a DI box, while the TRS stereo in/out is aimed at effects loop use2.
MIDI, tempo and mix options
For players running synced rigs, the Echo Pro offers MIDI Clock Sync, MIDI in, and a software selectable MIDI out/thru, along with a completely user definable MIDI map2. Delay time can be set with Tap Tempo2. A variety of mix options are available, including Dry, Analog, Input Mute and All Mute, which governs how the dry and delayed signals are combined at the outputs2.
Videos
Jay67A
shnobel
Riffs, Beards & Gear
Questions
Is the Line 6 Echo Pro still made?
No. Line 6 states on its own legacy product page that the Echo Pro is no longer made. It was released in 2002 as a rack version of the DL4 Delay Modeler, and it now turns up only on the used market. Players looking for the same delay models in a current Line 6 format would need to look at what the company offers today rather than at new Echo Pro stock.
Does the Line 6 Echo Pro have MIDI?
Yes. The Echo Pro offers MIDI Clock Sync, MIDI in, and a software selectable MIDI out/thru, plus a completely user definable MIDI map. That made it straightforward to slot into a studio or live rig where tempo and program changes are handled over MIDI.
Does the Line 6 Echo Pro have tap tempo?
Yes, the Echo Pro includes Tap Tempo, so delay times can be set by ear to match the song rather than dialled in by number.
How many presets does the Line 6 Echo Pro have?
The Echo Pro has 99 user definable programs, so a player or studio can store its own settings across the full set of delay models rather than working from fixed factory presets.
Does the Line 6 Echo Pro have XLR connections?
Yes. The Echo Pro has balanced XLR inputs and outputs alongside unbalanced 1/4 inch inputs and outputs, plus TRS stereo in/out for convenient effects loop connectivity.
Sources (2)
- In praise of: Line 6 DL4, MusicRadar, 2014-05-22
- Line 6 | Legacy Products, Line 6







