METROPOULOS GPM-45 Tube Amplifier Head Gpm 45-AMP 45HEAD

( Brand: Metropoulos ), ( Manufacturer Part Number: GPM-45 ), ( Part Type: Tube Amplifier Head ), ( Amplifier Type: Head ), ( Country/region Of Manufacture: United States ), ( Power: 40 W ), ( Suitable For: Acoustic Electric Guitar, Electric Guitar ), ( Amplifier Technology: Vacuum Tube )

Review METROPOULOS Gpm 45head Tube

Introducing the Metropoulos GPM-45, a powerful and versatile 45 amp head tube amplifier designed for musicians seeking rich, full-bodied tones. This amplifier head is a must-have for guitarists and bassists who demand exceptional sound quality and reliability.

The Metropoulos GPM-45 boasts a robust 45-watt output, which is more than enough to power your favorite cabinets and deliver crystal-clear sound with impressive clarity and depth. The amplifier's 45 amps of pure, tube-driven power deliver warm, harmonically rich tones that are perfect for various musical styles, from blues and rock to jazz and metal.

This amplifier head features a high-quality, all-tube design with 45 watts of Class A power. It comes equipped with four 12AX7 preamp tubes and four 6L6 power tubes, which provide a wide range of tonal options and exceptional sensitivity to your playing style. The GPM-45 also includes a 12AT7 rectifier tube, ensuring a smooth, responsive tone.

The amplifier's control panel offers a variety of features to help you dial in your perfect sound. The three-band EQ section includes treble, mid, and bass knobs, allowing you to fine-tune the frequency response of your tone. The presence control adds a high-frequency boost, enhancing the clarity and definition of your sound. The gain control sets the overall level of distortion, while the volume knob sets the overall output level.

The Metropoulos GPM-45 also includes a standby switch, which allows you to safely store the amplifier in standby mode when not in use. This feature ensures that your tubes remain at a safe temperature, preserving their longevity and ensuring that the amplifier is ready to perform when you are.

The amplifier head's rugged, all-steel construction ensures durability and reliability, making it an excellent investment for any musician. Its compact size and lightweight design make it easy to transport from gig to gig, while its robust build quality ensures that it can handle the rigors of the road.

In summary, the Metropoulos GPM-45 is a high-performance, versatile tube amplifier head that delivers rich, full-bodied tones with exceptional clarity and depth. Its all-tube design, powerful 45-watt output, and wide range of tonal options make it an excellent choice for guitarists and bassists seeking exceptional sound quality and reliability. Whether you're playing live on stage or recording in the studio, the Metropoulos GPM-45 will help you achieve the perfect tone every time.

Pros and Cons of buying a Metropoulos GPM-45: A 45 Head Tube, 45 Amp Head

The Metropoulos GPM-45 is a 45 head tube, 45 amp head that has gained popularity among hobbyists and professionals due to its impressive features. However, like any other electrical equipment, it comes with its advantages and disadvantages. In this article, we will discuss both the pros and cons of buying a Metropoulos GPM-45 to help you make an informed decision.

1. High Current Capacity: The Metropoulos GPM-45 has a current capacity of 45 amps, which is suitable for powering multiple high-current loads, such as welding machines or large-scale LED displays.

2. Durable Construction: The head tube is made of high-quality materials, ensuring that it can withstand the rigors of daily use. The head tube is also designed to dissipate heat efficiently, reducing the risk of overheating.

3. Versatile Applications: The Metropoulos GPM-45 can be used in various industries, including automotive, manufacturing, and entertainment. It is also suitable for DIY projects and educational purposes.

4. Easy to Install: The head tube is designed to be easy to install, making it a popular choice among hobbyists and professionals who require a reliable power source for their projects. The head tube also comes with clear instructions, making the installation process straightforward.

1. High Cost: The Metropoulos GPM-45 is a high-performance power source, and its price reflects its capabilities. It may be out of reach for some hobbyists or small businesses with limited budgets.

2. Heavy: The Metropoulos GPM-45 is a powerful device, and its weight reflects its capabilities. It may require additional support or structural modifications to accommodate its weight.

3. Requires Proper Maintenance: The Metropoulos GPM-45 requires regular maintenance to ensure optimal performance. This includes checking the electrical connections, cleaning the cooling fins, and monitoring the power output.

The Metropoulos GPM-45 is a high-performance power source that offers numerous benefits, including a high current capacity, durable construction, versatile applications, and easy installation. However, it also comes with some drawbacks, such as a high cost, heavy weight, and the requirement for proper maintenance.

If you require a power source for high-current applications, the Metropoulos GPM-45 is an excellent choice. However, if you have a limited budget or do not require the high current capacity, there may be other, more cost-effective options available. Ultimately, the decision to buy the Metropoulos GPM-45 depends on your specific needs and budget.

If you require a power source for high-current applications, the Metropoulos GPM-45 is an excellent investment. Its durable construction, high current capacity, and versatile applications make it a popular choice among professionals and hobbyists. However, if you have a limited budget, consider alternative options with lower current capacities or explore rental options for occasional high-current needs.

Details:

Perfect condition sounds perfect.

part #: gpm45 prices

• $72.95-$3550.00

specifications guitoamps:

• brand: Metropoulos
• mpn: Gpm-45
• part type: Tube Amplifier Head
• amplifier type: Head
• country/region of manufacture: United States
• power: 40 W
• suitable for: Acoustic Electric Guitar, Electric Guitar
• amplifier technology: Vacuum Tube

general guitoamps:

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

offer guitoamps:

• availability: In Stock
• best offers: True
• options: Ship-to-home
• started: July 15, 2025
• sold: 0
• quantity: 1

returns guitoamps:

• policy: No Returns

seller guitoamps:

• city: Sylmar, California
• # reviews: 522
• rating: 99.4%

payments guitoamps:

• other
• cash
• wallet: Google-pay
• credit card: Mastercard

shipping guitoamps:

• cost: $75.41
• service: UPS Ground
• class: Standard
• type: Calculated
• carrier: UPS
• transit: 3-7 Days

Metropoulos GPM-45 Is Similar To:

• Metropoulos Jmp100 Jmp 100 Handwired All Tube Amp Head With 2 Od Ch And Effects Loop (41.9% similar) Works perfectly, recently gone over by tech/ clean bill of health noted. High inputs jack. Marshall JMP100 clone. Hardwired, all tube guitar head. Only used in studio. A very particular tech build from a Metropoulos jump main circuit board. Perfect Metropoulos JMP100 100 wt. See my other...(February 15th, 2026)