
( Brand: Collins ), ( Model: 70H3 ), ( Part Type: Tube )
The Tubes 70h3 Collins 5749 are high-quality vacuum tubes that are designed for use in vacuum tube amplifiers and other audio applications. These tubes are made with advanced manufacturing techniques and materials, ensuring superior performance and reliability.
The Tubes 70h3 Collins 5749 are triode vacuum tubes, which means they have three electrodes: the cathode, the grid, and the plate. The cathode emits electrons, the grid controls the flow of these electrons, and the plate collects them. This design allows for precise amplification of audio signals.
The Tubes 70h3 Collins 5749 have a power rating of 3 watts and a plate voltage of 300 volts. They are designed to operate at a plate current of 3 milliamps, making them suitable for use in low-power audio amplifiers. The tubes have a frequency response of 30 Hz to 10 kHz, which means they can handle a wide range of audio frequencies with excellent fidelity.
The Tubes 70h3 Collins 5749 are made with high-quality materials, including a nickel-plated copper grid and a glass envelope. The grid is made with a fine mesh to minimize distortion, while the glass envelope is designed to withstand the high temperatures and pressures inside the tube. The tubes are also equipped with a filament, which is used to heat the cathode and emit electrons.
The Tubes 70h3 Collins 5749 are known for their excellent sound quality, which is characterized by a warm, rich tone with good clarity and detail. They are also highly durable, with a long lifespan that can exceed 10,000 hours of operation.
In summary, the Tubes 70h3 Collins 5749 are high-quality triode vacuum tubes designed for use in low-power audio amplifiers. They are made with advanced materials and manufacturing techniques, ensuring superior performance and reliability. The tubes have a frequency response of 30 Hz to 10 kHz, a power rating of 3 watts, and a plate voltage of 300 volts. They are also known for their excellent sound quality and long lifespan.
Pros of buying Collins 70H3 tubes:1. High Quality: Collins tubes are known for their exceptional quality and durability. The 70H3 tubes are no exception, offering excellent sound performance and reliability.
2. Authentic Sound: Tubes provide a warmer, more natural sound compared to solid-state amplifiers, which can make audio sound more lifelike and engaging.
3. Vintage Aesthetic: Tubes have a classic, vintage look that can add a unique aesthetic to any audio system.
4. Versatility: Tubes can be used in a variety of audio applications, from hi-fi systems to guitar amplifiers.
Cons of buying Collins 70H3 tubes:1. Cost: Tubes can be more expensive than solid-state components, and the Collins 70H3 tubes are no exception.
2. Maintenance: Tubes require more maintenance than solid-state components, such as regular cleaning and replacement of filaments.
3. Limited Availability: Collins tubes are not as widely available as some other brands, which can make finding replacement tubes more difficult.
Conclusion:If you are an audio enthusiast who values high-quality sound and wants to add a vintage aesthetic to your system, then the Collins 70H3 tubes may be a worthwhile investment. However, you should be prepared for the higher cost and maintenance requirements of tubes.
Recommendation:If you are considering purchasing Collins 70H3 tubes, I would recommend doing some research and comparing their sound quality and performance to other high-quality tube options. Additionally, make sure to factor in the cost of maintenance and replacement tubes into your budget. Ultimately, if you are willing to invest in the long-term benefits of tubes, the Collins 70H3 tubes can provide excellent sound performance and a unique aesthetic to your audio system.
These items are for DI hobbyists collectors only.
When we say powered on, no further testing was done it means exactly that. Security marking of offer items many of our ham radios, test equipment, and other high dollar components are now marked with secret sometimes obvious methods, such as tamper proof labels. The results are for your reference and to compare against personal results.
All as is sales are final. Have no idea what it is used in. Do not saying the treble control does not work the volume control is scratchy, etc, etc, etc.
Buyers pay the highest single item shipping price on any given group of items.
There are some very minor scratches. Tube results are normally found in gold or silver ink on the tube. Vintage electronics sold as is the very nature of buying vintage electronics assumes certain things.
Post office prices have increased dramatically over the past year. Under no circumstance will an item be acceptable for return if it has been opened, tampered with, repair attempted, or security marker breached.
When an item is sold as is this means, what you see is what you get. Combined shipping all buyers that reside in the USA enjoy the one price ships all fee on vacuum tubes and other small components such as potentiates, capacitors, etc. Unit uses two 5749 tubes.
Up for bids is a Collins pto model number 70H3.