The T-Rex Sweeper 2 is a chorus effect pedal for bass and guitar from Denmark's T-Rex Engineering, pitched by the maker as "classic chorus for bass guitar."1 It is a digital pedal that aims for an older voice: T-Rex describes it as an "analog sounding chorus," and the Sweeper 2's headline change over the original Sweeper is an upgrade to its digital core.1 Premier Guitar's reviewer put it the same way, noting that T-Rex "adjusted the digital core's algorithm to produce warmer, more vintage-sounding modulation."2
For a bass player, it is a straightforward modulation box: set the input level, then shape the chorus with depth, rate, and volume, and run it mono or stereo. It belongs to the wider family of chorus pedals and sits among bass pedals generally.
A digital chorus with a vintage voice
Chorus works by doubling the signal with a slightly delayed, modulated copy, and the Sweeper 2 does that processing digitally. What T-Rex has aimed for is the character of older analog chorus units: the maker's product page calls it an "analog sounding chorus" and says the "Sweeper 2 gets an upgrade to its digital core."1 Premier Guitar's reviewer tied the two together, writing that the company "adjusted the digital core's algorithm to produce warmer, more vintage-sounding modulation."2
Vintage Guitar's report on the upgrade framed it for bassists: "The Sweeper 2 chorus gives bassists easier-to-read control graphics and an upgraded algorithm."4
Controls
The pedal keeps a small, familiar set of knobs. T-Rex lists the controls as on/off, depth, rate, volume, and input gain.1 Premier Guitar's reviewer noted that "the depth, rate, and volume knobs appear in their original configuration," so the layout carries over from the first Sweeper.2
| Control | What it does |
|---|---|
| Input gain | Sets the level into the pedal, side-mounted, with an LED clipping indicator12 |
| Depth | Amount of modulation1 |
| Rate | Speed of the modulation1 |
| Volume | Output level1 |
| On/off | Bypasses or engages the effect1 |
The input gain control got particular attention in Premier Guitar's review: "I set my level using the side-mounted input control. This includes a helpful LED clipping indicator for dialing in your" level, the reviewer wrote, adding that the knob can be pressed into the enclosure to prevent accidental changes.2 That matters on bass, where a hot signal can clip the input before the chorus even starts.
Stereo outputs and enclosure
The Sweeper 2 works in mono or stereo. Premier Guitar's press release put it plainly: "While the pedal can be used in mono, Sweeper 2 features L and R outputs."3 The maker's product page lists the external connectors as an input jack, an output jack, and a 9V DC jack, and Premier Guitar's review counts "dual outputs for stereo operation" among the features.12
The enclosure is purple, with the jacks mounted at the top, which keeps cables from sticking out sideways on a crowded board.2 The reviewer's verdict on the build was short and positive: "Solid construction. Thoughtful layout."2
What changed from the original Sweeper
The Sweeper 2 is a new incarnation of T-Rex's earlier Sweeper, and the changes are modest by design. Premier Guitar's reviewer wrote that "beyond that, the Sweeper 2 has the same features as the previous version," with the internal algorithm adjustment as the main upgrade.2 Vintage Guitar added the easier-to-read control graphics to the list of changes.4
Price
At its 2013 introduction, the Sweeper 2 carried a retail price of $269 and a street price of $199, figures Premier Guitar's press release and Delicious Audio both reported.35 Premier Guitar's 2021 review still listed "Street: $199."2
Videos
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Questions
Is the T-Rex Sweeper 2 Bass Chorus analog or digital?
The Sweeper 2 is a digital pedal. T-Rex describes it as an analog sounding chorus, and the company upgraded the pedal's digital core to get there. Premier Guitar's reviewer noted that T-Rex adjusted the digital core's algorithm to produce warmer, more vintage-sounding modulation, so the circuitry is digital while the intended voice leans vintage.
Does the T-Rex Sweeper 2 Bass Chorus work in stereo?
Yes. The pedal carries L and R outputs for stereo operation, and it can also be used in mono with a single output. Premier Guitar's review lists the dual outputs for stereo operation among its features, and the maker's product page shows an input jack, an output jack, and the L and R outputs alongside a 9V DC jack.
What does the input level knob do on the Sweeper 2?
The input gain control sits on the side of the pedal and sets the level going into the chorus. Premier Guitar's reviewer used the side-mounted input control, which includes an LED clipping indicator for dialing in the level. The knob can also be pressed into the enclosure to prevent accidental changes.
What changed between the original Sweeper and the Sweeper 2?
The main upgrade is internal: T-Rex gave the Sweeper 2 an upgraded algorithm in its digital core for a warmer, more vintage-sounding modulation. Premier Guitar's reviewer noted that beyond that, the Sweeper 2 has the same features as the previous version. Vintage Guitar also noted easier-to-read control graphics on the new version.
How much does the T-Rex Sweeper 2 Bass Chorus cost?
At launch in 2013, the Sweeper 2 carried a retail price of $269 and a street price of $199, a figure Premier Guitar's press release and Delicious Audio both reported. Premier Guitar's 2021 review still listed the street price as $199.
Sources (5)
- → T-REX EFFECTS ← Pedals for guitar and bass players!, T-Rex Effects
- T-Rex Sweeper 2 Bass Chorus Pedal Review, Premier Guitar, 2013-08-26
- T-Rex Introduces Møller 2 and Sweeper 2 Pedals, www.premierguitar.com, 2013-01-01
- T-Rex Upgrades Moller, Sweeper Effects, Vintage Guitar magazine, 2012-12-28
- Guitar Pedal News: T-Rex Møller 2 And Sweeper 2, Delicious Audio, 2013-01-15
