JOYO JMA-15 MJOLNIR 15W Dual Channel Guitar Amplifier Head - Black
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The MJOLNIR is a high gain tube amplifier head that specially designed for creating the ultimate powerful metal tone. It features 2 channels, 3 preamp tubes and 2 power amp tubes. From deep low frequencies, clean mid boosts to fierce modern distortion.
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JMA-15 MJOLNIR Amplifier
The MJOLNIR is a high gain tube amplifier head that specially designed for creating the ultimate powerful metal tone. It features 2 channels, 3 preamp tubes and 2 power amp tubes. From deep low frequencies, clean mid boosts to fierce modern distortion.
Dual Channel
The JMA-15 is designed with a classical high gain circuit and two channels: Channel 1 is clean, push is used for boosting middle frequency and gain. Channel 2 is distortion and includes normal and mid cut controls. When in normal mode you can obtain fierce modern distortion. Engaging the mid cut will give you a solid and heavy low frequency. Boost can be used on both channels.
Ins and Outs
The JMA-15 has 4-8-16Ω impedance speaker outputs, which can power any mainstream cabinet. An effects loop is included but can be bypassed when a pure tube tone is desired. Channel switching is easily accessed during performance via the included footswitch. The JMA-15 is housed in an all-metal case and is powered by three ECC83, one ECC82, two EL84. 15W output can be used for practice, rehearsal, and performance.
Features:
- Dual Channel(Clean/Distortion) switchable
- Tube: ECC83 x 3，ECC82 x 1,EL84 x 2
- Independent 3 band EQ for each channel
- Independent Volume control for each channel
- Boost function
- Vintage/MOD distortion mode switchable
- Send and return effect loop with loop bypass function
- Speaker output: 4/8/16Ω switchable
- Rated power: 15W (RMS)
- Accessory: footswitch pedal (attached to the amp)
The Little Engine That (Possibly) Could
By: RADE on 26 February 2022I love that there are separate EQs and master volumes for each channel - that's rare for this price point! The clean channel has a lot of possibilities and the push switch breaks it up nicely, though I find it a bit weak without it. I found the distortion channel more difficult to dial in - it has so much gain, more than it needs in my opinion if you want tight chugging so it muddies up fast. The boost switch only adds grief to this (it's only good for solos to me) but the mid-cut switch makes up for it. I could only achieve a sound I liked after buying an OD pedal with its gain set to 0 and with minimal gain on the Mjolnir. It sounds great now. So it's not a magic bullet, but with a bit of help it turns into a beast!
4 (4)
The Mighty Mjolnir
By: Ryan on 1 October 2021This thing is incredible! Could not be happier with the JoYo Mjolnir. Clean channel is AMAZING especially when pushed to edge of break up. Gives absolutely beautiful tube tones. Use the included footswitch and change it to the 2nd channel and have your face melted off with the tonnes of gain it has on tap! Build quality on this amp is top notch as well. It’s built like an absolute tank with its metal body and it feels very solid. Once again. Could not be happier with this amp. Great sounds. Great build quality. Absolute bang for your buck value! If you’re in the market for a lunchbox amp, look no further!
5 (5)
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