portland electronics "amps" - craigslist (2024)

FAQs

How much does an amp cost? ›

Regular amps for beginners can cost around $50 to $3000. Classic tube amp sounds are available from $500 to $7,000. Solid-state amps can cost from $100 to $1,500. Mid-range combo amps are available from $250 to $1,000.

If you are playing light dance music, the amplifier's 4-ohm power should be 1.6 x 100 W or 160 W continuous per channel. To handle heavy metal/grunge, the amplifier's 4-ohm power should be 2.5 x 100 W or 250 W continuous per channel.

For arena tours and extra-loud bands, you'll want a 100-plus-watt tube amplifier. These are the big guns, tailor-made for pummeling your audiences into submission with brutal riffs and scorching leads. If you're shooting for a classic wall-of-Marshalls sound, then this is the range you'll want to explore.

Design and parts make the difference. These are examples of how different amplifier designs and build quality influence the overall performance of the amp, which in turn also has a direct impact on price.

Depending on the amp and type of damage that needs to be repaired, repairs can range from $75 to $700, but are generally around $150-$250.

A rule of thumb is to provide 1.5-2 times the continuous power rating of your speaker, ensuring a healthy margin of power to handle sudden spikes. And once you've chosen your amp. you're all set!

You should select a model with an output power rating equal to the speaker's continuous power rating. Consult the amplifier manufacturer or owner's manual to learn more. For applications such as critical listening in a studio environment, an amp needs enough headroom to cleanly reproduce transient peaks.

Look for the continuous RMS (root mean square) power rating on your speakers. The RMS is usually a ranging value, e.g., 5-60 watts RMS. Take the top number of the RMS rating and find an amp that can put out 75 to 150 percent of that number. To calculate 75 percent of that number, multiply it by 0.75.

Identify the Wattage: Determine the power consumption of the electrical device or system, measured in watts (W). Know the Voltage: Establish the voltage at which the electrical system operates, measured in volts (V). Calculate the Amperage: Divide the wattage by the voltage using the formula A = W / V.