METROPOULOS JMP100 Jmp Handwired Tubehead Od Effects Loop Tube Amplifier Head Ch.

( Brand: Metropoulos ), ( Manufacturer Part Number: JMP100 ), ( Part Type: Tube Amplifier Head ), ( Amplifier Type: Head ), ( Suitable For: Electric Guitar ), ( Country Of Origin: United States ), ( Product Line: Marshall Clone ), ( Amplifier Technology: Vacuum Tube )

Review METROPOULOS Jmp 100 Handwired All Tubehead Od Ch. And Effects Loop

The Metropoulos JMP100 JMP Handwired Tube Head is a high-performance guitar amplifier head that delivers rich, warm, and dynamic tones for guitar players seeking an authentic tube amp experience. This versatile amplifier head is handwired with great care, ensuring the highest quality and consistency in sound.

The Metropoulos JMP100 JMP Head is based on the classic JMP circuit, known for its ability to produce a wide range of tones, from classic British crunch to bold American high gain. It features four independently selectable EL84 power tubes, delivering a total power output of 100 watts, and four 12AX7 preamp tubes, which provide the gain and tone shaping capabilities of this amplifier head.

One of the standout features of the Metropoulos JMP100 JMP Head is its built-in effects loop, which allows you to add external effects, such as chorus, reverb, or delay, to your signal chain without significantly affecting the tone of your amplifier. The effects loop is designed to be flexible and easy to use, with a tap tempo switch for controlling delay effects and a level control for balancing the effected signal with the dry signal.

Another notable feature of this amplifier head is its adjustable bias control, which allows you to set the bias for each power tube individually, ensuring optimal performance and reliability. The bias control is conveniently located on the front panel, making it easy to access and adjust as needed.

The Metropoulos JMP100 JMP Head also features a high-quality, hand-wired transformer, which contributes to the amp's excellent tone and dynamic response. The transformer is coupled with a custom-designed output section, which delivers a clean, pure power signal to your speakers.

The amplifier head is equipped with a variety of input and output options, including a high-impedance input for use with active pickups, a speaker output for connecting to a cabinet, and a line output for recording or practicing silently with headphones. The JMP Head also features a standby switch, which allows you to preserve the tubes when the amplifier is not in use, ensuring longer tube life and improved reliability.

In summary, the Metropoulos JMP100 JMP Handwired Tube Head is a high-quality, versatile, and powerful guitar amplifier head that delivers rich, warm, and dynamic tones. Its handwired construction, built-in effects loop, adjustable bias control, and high-quality transformer make it an excellent choice for guitar players seeking a truly authentic tube amp experience.

The Metropoulos JMP100 JMP Handwired Tube Head Od Effects Loop is a high-end tube amplifier head known for its rich, warm tone and versatile features. Here are some pros and cons to help you decide if this amplifier head is the right choice for your musical needs.

1. Authentic Tube Tone: The JMP100 delivers a classic, tube-driven sound that is highly sought after by guitarists.

2. Handwired Construction: Each component is meticulously handwired to ensure the highest possible quality and performance.

3. Versatile Channel Selection: The amplifier head offers two channels, each with its unique characteristics and ability to cover a wide range of tones.

4. Effects Loop: The built-in effects loop allows you to add external effects to your signal chain without compromising the amplifier's tone.

5. Powerful: With a maximum output power of 100 watts, the JMP100 is suitable for various gigging and recording applications.

1. Expensive: The JMP100 is a premium amplifier head and comes with a hefty price tag.

2. Heavy: The handwired construction and use of high-quality components result in a heavier-than-average amplifier head.

3. No Built-in Reverb: Some guitarists may find the lack of a built-in reverb unit to be a drawback.

In conclusion, the Metropoulos JMP100 JMP Handwired Tube Head Od Effects Loop offers a rich, authentic tube tone, versatile channel selection, and a robust effects loop in a handwired construction. While it comes with a high price tag and is heavier than some alternatives, its unique features and superior sound quality may justify the investment for serious guitarists.

If you are a professional guitarist seeking a high-quality tube amplifier head with handwired construction, versatile channel selection, and a robust effects loop, the Metropoulos JMP100 JMP Handwired Tube Head Od Effects Loop is an excellent choice. Its authentic tube tone and superior build quality make it a worthwhile investment for those who demand the best in their music equipment.

Details:

Works perfectly, recently gone over by tech/ clean bill of health noted. High inputs jack. Marshall JMP100 clone. Handwired, all tube guitar head.

Only used in studio. A very particular tech build from a Metropoulos JMP main circuit board. Perfect Metropoulos JMP100 100 wt. See my other great items.

Also added is noise free, no loss Metropoulos effects loop. Clean volume knob, 2 mini switches for clean/OD1 and On/ OD2 included foot switch controls these parameters. From left to right on front panel is Presence, Bass, mid, treble, master volume, preamps volume knobs. Back panel has left to right ft.

Added is 2 Headfirst FET Boost kit channels.

part #: jmp100 price

• $2099.00

specifications guitoamps:

• brand: Metropoulos
• mpn: Jmp100
• part type: Tube Amplifier Head
• amplifier type: Head
• suitable for: Electric Guitar
• country of origin: United States
• product line: Marshall Clone
• amplifier technology: Vacuum Tube

payments guitoamps:

• credit card: Diners-club
• wallet: Apple-pay
• other

returns guitoamps:

• policy: No Returns

offer guitoamps:

• sold: 0
• started: February 15, 2026
• options: Ship-to-home
• availability: In Stock
• best offers: True
• quantity: 1

general guitoamps:

• condition: Used
• Musical Instruments Gear > Guitars Basses > Guitar Amplifiers

seller guitoamps:

• # reviews: 4606
• city: Reynoldsville, Pennsylvania
• rating: 100.0%

shipping guitoamps:

• cost: $0.00
• type: Calculated
• carrier: USPS
• class: Expedited
• service: USPS Priority Mail
• transit: 6-12 Days

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