Frequently Asked Questions

A source refers to stereo or mono program material provided by devices such as an AM/FM tuner, CD player, video player, MP3 player, and more. Essentially, a "source" is the origin of the audio or program content.

Is your application best suited for a mono or stereo setup? In many installation scenarios—such as restaurants, clubs, bars, schools, and churches—mono configurations are often preferred. This is because stereo sound can lose its impact when listeners only hear one side of the mix, leading to an uneven audio experience. Rolls mixers and mixer/amplifiers are designed with flexibility in mind, offering either a stereo/mono switch or mono-only operation. With Rolls, you can tailor the audio setup to perfectly suit your environment.

Phantom power refers to a method of powering devices, such as condenser microphones, without the need for a dedicated power cord, battery, or external power supply. Instead, power is delivered through the same cable used for the audio signal, creating the appearance of a device with no external power source—hence the term "phantom power."

Condenser microphones require power to function. While some include battery compartments, most are designed to operate on phantom power. This system sends voltage from the mixer through the microphone cable directly to the microphone, eliminating the inconvenience of replacing batteries. All Rolls mixers and mixer/amplifiers are equipped to provide phantom power.

Traditionally, phantom power was standardized at 48 volts. However, most modern condenser microphones can operate on a range of 9 to 12 volts DC. Rolls products offer phantom power between 12 and 48 volts, depending on the model. It′s important to note that for proper microphone operation, the critical factor is typically the current (amperage), not the voltage. Even with a lower phantom voltage, such as 12V, Rolls products are designed to supply the same current as a 48V system. Only a few legacy devices still require the full 48 volts to draw sufficient current.

When considering your application, rack space is often a crucial factor. Rolls Mixer/Amplifiers are designed with this in mind, offering compact solutions. The MA1705 and MA2355 models require just one rack space each, while the MA2152 occupies two. In contrast, standalone mixers and amplifiers can take up three or more rack spaces. However, your specific needs will ultimately guide the decision. Separate mixers and amplifiers are often preferred when size, budget, and user expertise are not limiting factors.

TRS stands for "Tip Ring Sleeve," referring to the three components of a stereo plug. The Tip is the front end of the plug, typically carrying the left audio channel. The Ring, a metal band between the Tip and the Sleeve, usually handles the right audio channel. Lastly, the Sleeve, located behind the Ring, often serves as the ground connection.

For dealer referrals outside of the USA or Canada, please reach out to us directly at rollsorders@gmail.com

All materials used in Rolls products meet current industry standards. We prioritize reliability by using proven materials in our circuit boards, avoiding potential risks associated with lead-free solder. NASA and other government agencies specifically prohibit lead-free solder in mission-critical applications due to its higher likelihood of causing shorts and failures over time. To ensure exceptional durability and performance, we use leaded solder in the internal PCBs of our products. WARNING: The solder in Rolls products′ internal PCBs contains lead, a chemical known to the State of California to cause birth defects and other reproductive harm.

Follow this link, You may need to cut and paste it to your browser. https://rolls.com/doc/220v-120v%20Conversion.pdf