The JMD:1 preamp offers 16 presets divided into clean, crunch, overdrive, and lead categories; all easily accessed via a single knob. The power stage uses the revered EL34 pentode vacuum tube to provide the distinctive Marshall sound. Effects fall into three categories: Modulation Effects, Delays, and a custom-voiced Reverb. The Series/Parallel FX Loop offers a dedicated Dry/Wet Mix control. Four fully programmable channels allow instant access to your custom sounds. The Silent Recording mode mutes the internal speakers in favor of the XLR out (with emulated speaker response). Headphone output, Line Input, Line Output, and MIDI jacks are also provided.
The Marshall JMD501 Guitar Combo Amplifier is a 50-watt combo amp, with a balanced mixture of classic all-tube power and studio-quality effects, all wrapped up into one amazing Marshall package. The JMD502 uses this technology to create a vast library of tone styles firmly rooted in the foundations of Marshall amplifiers. The JMD502 guitar amp provides interpretations of unmistakable classic sounds and a variety of combinations. These are delivered in 16 easy-to-access topologies, replicated from component level information for a truly natural and interactive playing experience.
The digital and tube combination for JMD502 50W amp
After working closely with the digital experts from Softube, Marshall created a digital and tube combo amplifier solution that offers a multitude of tones, allowing the guitarist to experience and experiment with a variety of pre-amplifier topologies from Marshalls history, all in combination with the power and warmth of a traditional EL34 based power amp stage.
The Marshall JMD502 amplifier features a compilation of tones created by Marshall over the last 45 years, from a vintage plexi, to a JCM 800, all the way through to a high gain JVM. For instance, have you ever wondered what a 1974 preamp would sound like through a monster 100W tube stage with a hint of reverb for ambience? JMD502 lets you do that. Do you want to try a Guv'nor pedal through the power of a Marshall 50/50 power amp and a hi-fi style delay? Marshall JMD502 lets you do that too. What makes JMD502 so adaptable and versatile, is that it is completely programmable, allowing you to store your sounds and then access them again with ease.
A delicate balance between technology and tone
Instead of trying to mimic the overall sound of an amplifier by simply creating a copy of the tone that is generated, the Marshall JMD502 guitar amp takes into account every nuance of a preamp. Not only recreating the tone accurately, but also how the unit reacts when you make adjustments to the equalization.
The familiar front panel is extensive in features and easy to navigate. Selecting the preamp sound you want is as simple as choosing one of the 16 sounds from the rotary pre-amp control. This section has been divided into four separate groupings for ease; Clean, Crunch, OD, and Lead. From there, all you have to do is set up your EQ section and choose and adjust which of the quality effects you desire. Storing this sound is just a case of holding down one of the four channel buttons on the amp or saving to the foot controller, storing everything from the EQ to the parameter of chosen effect. So now you're able to go from a classic low-wattage tube sound with a hint of reverb, to a traditional high-gain '80s lead sound with delay for solos, to a scooped-out metal sound, incorporating chorus with the press of a button.
The effects section of the JMD502 guitar amp gives access to a host of popular effects, all of which have been tailored specifically to give the best possible response in the Marshall JMD502. Not only are the effects redesigned, they are also fully adjustable to be as subtle or extreme as you wish. The effects are divided into three separate stages, Modulation, Delay and also an independent Reverb.
Functionality from studio to the stage
With the included footswitch, the Marshall guitar amp can work to its full ability. The foot controller enables the player to store four sounds across seven banks, giving the option of storing 28 sounds and the ability to access any of them at any given time. When sounds are stored in the foot controller or the amplifier it recalls everything apart from the master volume and the Presence. MIDI switching capabilities also allow the user to control the amplifier remotely, and add the possibilities of up to 128 configurations. Effects loops allow the player to add in any personalization they require, and the balanced line out contains the best Marshall cabinet simulations for recording a multitude of tones directly.
Power rating: 50W
Preamp: Digital Natural Harmonic Technology
Poweramp tubes: 2 x EL34
Preamp topologies: 16
Modulation effects: Chorus, Phaser, Flanger, Tremolo
Delay effects: Hi-Fi Analogue, Tape, Multi Tap tempo control
Reverb: Independent custom voiced
Midi Control: Midi in, Midi Thru
Stompware controller: supplied
Emulated line out: XLR
Headphone out: 1/4 inch jack
Line in: 1/4 inch jack
Preamp: 1/4 inch jack
Effects loop: Serial / Parallel -10dBV / +4dB with mix control
Speaker output: 1x16 , 1x8 , 2x 16
Developed in the UK, manufactured in China
- Great combo amp with many effects Review by Keith
Value Quality Features