Music & Audio Advice Audio Interfaces and Connectivity 2 — Questions and Answers
Question 1: What is the primary advantage of a Thunderbolt audio interface over a USB 2.0 interface?
- Lower round-trip latency and higher bandwidth (Correct answer)
- It works without any drivers
- It uses less desk space
- It supports MIDI only
Correct answer: Lower round-trip latency and higher bandwidth
Thunderbolt offers far greater bandwidth and lower latency, making it ideal for high-track-count, low-latency monitoring.
Question 2: Which connector is most commonly used for studio condenser microphones requiring phantom power?
- XLR (Correct answer)
- 1/4" TS
- RCA
- USB-C
Correct answer: XLR
XLR carries balanced signal and the 48V phantom power that condenser mics need.
Question 3: What does 'phantom power' typically supply to a microphone?
- 48 volts DC (Correct answer)
- 120 volts AC
- 5 volts USB
- 9 volts battery
Correct answer: 48 volts DC
Phantom power is standardized at 48V DC, sent down the XLR cable to power condenser mics.
Question 4: An interface advertised as '2-in/2-out' refers to what?
- 2 input channels and 2 output channels (Correct answer)
- 2 USB ports and 2 power ports
- 2 microphones and 2 speakers included
- 2 GHz processing on each side
Correct answer: 2 input channels and 2 output channels
The notation describes the number of simultaneous audio input and output channels.
Question 5: What is the function of a 'direct monitoring' control on an audio interface?
- Routes input straight to the headphones to avoid latency (Correct answer)
- Boosts the output volume past 0 dB
- Converts MIDI to audio
- Adds reverb to the recording
Correct answer: Routes input straight to the headphones to avoid latency
Direct monitoring lets you hear the input signal without the round-trip delay through the computer.
Question 6: Which cable type carries a balanced mono signal on a single connector?
- 1/4" TRS (Correct answer)
- 1/4" TS
- RCA
- Speakon
Correct answer: 1/4" TRS
A TRS (tip-ring-sleeve) jack carries a balanced mono signal, rejecting noise over long runs.
Question 7: What is the typical purpose of an ADAT optical (Lightpipe) port on an interface?
- To expand input count by linking another converter (Correct answer)
- To output a stereo headphone mix
- To connect a MIDI keyboard
- To charge the interface
Correct answer: To expand input count by linking another converter
ADAT optical carries up to 8 channels of digital audio, commonly used to add more preamps via an external unit.
Music & Audio Advice Audio Interfaces and Connectivity 2
What is the primary advantage of a Thunderbolt audio interface over a USB 2.0 interface?