Roland CUBE-40GX Guitar Combo Amplifier

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Multiple COSM amp models, 3 types of FX, i-Cube Link for interfacing with iOS, and a built-in tuner make this 40-watt monster perfect live or in the studio.

Building on the top-level tone and rock-solid reliability that's made the CUBE name famous, the CUBE-GX series turns up the heat with even more versatile operation and connectivity for Apple's iPhone, iPad, and iPod touch. With 40 watts of power and a custom-designed 10-inch speaker, the compact Roland CUBE-40GX is the ultimate go-everywhere amp for gigs, recording, and practice at home. 11 COSM(R) amp types and three independent channels--including a fully programmable SOLO channel--provide sounds for playing any style, with remote control of channel switching, effects, and more via the optional GA-FC Foot Controller. i-CUBE LINK takes practice and mobile recording to a greater level, providing a built-in audio interface for working with music apps on your favorite iOS devices.

Flexible Combo For Gigging, Recording, And Practice

Featuring 40 watts of power, a custom-designed 10-inch speaker, and a slightly larger cabinet than previous designs for even better performance, the CUBE-40GX delivers satisfying, versatile guitar tones with integrated effects. Compact and easy to carry, it provides plenty of volume for everyday playing at small clubs, coffee houses, houses of worship, rehearsals, and beyond. For recording, you can use the CUBE-40GX's RECORDING OUT/PHONES jack to mute the onboard speaker and send studio-quality tones with COSM speaker modeling directly to an audio interface or mixing board. Headphones can be used with this jack as well, perfect for silent practice read more sessions. Built with legendary CUBE construction standards, the CUBE-40GX is rugged, reliable, and ready for the long haul.

COSM Amps And Three Independent Channels

The CUBE-40GX is equipped with a wide range of COSM amp types and three independent channels for maximum tonal versatility. The JC CLEAN channel provides the renowned clean tone of Roland's famous JC-120, while the LEAD channel offers ten different amp choices, from blackface clean to Brit overdrive to the original EXTREME amp for massive, high-gain metal riffs. A third SOLO channel is completely programmable, allowing you to store all settings from either the JC CLEAN or LEAD channel, along with EQ and effects.

Top-Quality Effects and More

With three independent, easy-to-use effects sections, the CUBE-40GX gives you a full arsenal of top guitar processing onboard. The EFX section offers five different stompbox-type effects, while the dedicated DELAY section has two different delay types and a TAP button for quickly setting delay times. REVERB is included as well, with your choice of vintage spring emulation or a studio-style plate. The CUBE-40GX also features a chromatic/manual tuner, built right into the amp!

Powerful Performance Control

The optional GA-FC Foot Controller is the perfect partner for the CUBE-40GX, with six footswitches for selecting amp channels and turning effect sections on/off. It's also equipped with two expression pedal jacks for foot control of input and master volumes. Setup time is lightning fast--the GA-FC requires no AC power adapter, and connects easily via its included stereo 1/4-inch cable. Remote channel switching on the CUBE-40GX is also possible with optional BOSS FS-5U or FS-6 footswitches.

i-Cube Link: Built-In Interface for iOS Devices

Onboard the CUBE-40GX is Roland's innovative i-CUBE LINK interface, which lets you integrate with your iPhone, iPad, or iPod touch using a real guitar amp with great tone. Unlike typical bulky and inconvenient iOS guitar interfaces, i-CUBE LINK connects to your device's audio jack quickly and simply with the included cable, providing two-way communication with your favorite music apps. With i-CUBE LINK, you can play along with music tracks and send studio-quality COSM guitar tones with effects straight into the recording app of your choice. The versatile i-CUBE LINK jack can also be used as a simple stereo input, enabling you to plug in nearly any music player or audio device and play it through the CUBE-40GX.

Cube Jam App: Powerful, Fun, And Free!

Available for free from the App Store, the Roland CUBE JAM app turns your iOS device into a fun command center for jamming, recording, and learning. Play back commercial songs and minus-one tracks through the CUBE-40GX via i-CUBE LINK and riff along for hours with the amp's great COSM tones. CUBE JAM also records audio through the i-CUBE LINK connection, letting you capture your jams with a single touch. After recording, you can adjust the volume of your guitar and backing music independently in the app, then export your mix to a 16-bit, 44.1 kHz WAV file. CUBE JAM also includes powerful tools for music practice, including independent speed and pitch adjustment of audio playback, Center Cancel to remove solos and create your own jam tracks, and more.


- 40-watt guitar amp with custom-designed 10-inch speaker
- Three channels: JC CLEAN, LEAD (with 10 different COSM amp types), and SOLO
- SOLO channel is fully programmable, allowing you to save and recall amp type plus EQ and effects settings
- Three independent effects sections: EFX (five types), DELAY with tap tempo, and REVERB
- Hands-free channel switching, effects on/off, and more via GA-FC Foot Controller (sold separately)
- i-CUBE LINK jack provides simple audio interfacing with iPhone, iPad, and iPod touch (interface cable included)
- Free CUBE JAM app for iOS plays songs and minus-one jam tracks, and lets you record the CUBE-40GX's COSM amp tones along with music playback
- Three-band EQ; built-in chromatic/manual tuner
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- Rated Power Output: 40 W
- Nominal Input Level (1 kHz): INPUT: -10 dBu, i-CUBE LINK/AUX IN: -10 dBu
- Input Impedance: INPUT: 1 M ohm
- Speaker: 25 cm (10 inches) x 1
- Power Consumption: 43 W
- Accessories Included: Owner's manual, Power cord, Mini cable (4-pole miniature phone type), GA-FC Sticker
- Options (sold separately): Footswitch (BOSS FS-5U, BOSS FS-6), GA Foot Controller (GA-FC)
- Connectors:
- - INPUT jack: 1/4-inch phone type
- - i-CUBE LINK/AUX IN jack: 4-pole miniature phone type
- - RECORDING OUT/PHONES jack: Stereo 1/4-inch phone type
- - FOOT SW (TIP: JC CLEAN/LEAD, RING: SOLO) jack: 1/4-inch TRS phone type
- - FOOT SW (GA-FC) jack: 1/4-inch TRS phone type
- - AC IN jack
- Width: 409 mm, 16-1/8 inches
- Depth: 221 mm, 8-3/4 inches
- Height: 412 mm, 16-1/4 inches
- Weight: 9.4 kg, 20 lbs. 12 oz.

For support or warranty questions, please contact the manufacturer:
Phone: 323-890-3700

Reviewers gave this product an overall rating of 3.5 out of 5 stars. (8 ratings)
Submitted January 12, 2015 by Tom Smith in Glens Falls, NY
"Roland Cube 40 GX amp"
Overall: 3.5 out of 5 stars
Verified Customer zZounds has verified that this reviewer made a purchase from us.
For $250 delivered it's hard to find much to complain about. VERY well balanced, tight sound. I was worried that a single 10 " closed back combo would have a boxy sound but oddly it doesn't. It seems to defy physics in that sense. ( must be the way it's ported) This amp does a few things very well and most things quite well. I mostly use the clean channel ( JC 120) and the rectifier setting. If you spend some time tweaking you really can get that singing, screaming Santana thing going. Amazing. Who da thought? Reverb (both spring and plate) are both quite nice if used sparingly. The warm delay is really nice and I'm super picky. All the warmth of analog without the undesirable decay artifacts. The only non-adjustable parameter is feedback (repeats). Luckily Roland and I see eye to eye on this as there four discernable repeats. I don't use the other time based effects (chorus,flange, etc,) as theyr'e too saturated for my taste. The only thing I can comment negatively on is the subject of white noise. Others have commented on this. It seems to be common to all Cube amps.The amp itself is really quite quiet but there is a hiss that lives in the samples themselves. Im not sure if I would feel comfortable recording with this problem. If you play a single note or chord at a low volume and let it naturally die out, you'll notice that as the note dies so does the hiss. As you crank it up the s/n ratio improves and the hiss is not really noticable. Oddly this problem doesn't seem exclusive read more to Roland's COSM technology as I've noticed the hiss in other sample based amps that I've owned (both Line 6 and Behringer) I'm no electrical engineer but it seems like that white noise could be dialed out fairly easily but then again maybe not. I have yet to play this on a gig with a drummer so I can't comment on it's gig-worthiness. It sure seems robust and loud enough in the living room. Plenty of low end. Really nice clarity in the high end too with zero harshness. As a grab and go amp for the money this thing slays the competition. Nice going Roland!

Musical Background:
Pro player...40 years

Musical Style:
Jazz, funk, soul
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