-
BOOM
-
Duet 3
-
Symphony Desktop
-
Symphony I/O Mk 2
-
Jam X
-
HypeMiC
-
MiC +
-
ClipMic digital 2
-
Groove
-
Jam +
-
MetaRecorder
-
Plugins
-
Apogee Control Remote
-
FAQ
-
Legacy Products
- AD-16x & DA-16x
- AD-16 & DA-16 (non-x versions)
- AD-8000
- AMBEO Smart Headset
- AMBus Cards
- Big Ben
- Duet (Firewire)
- Duet 2
- Duet for iPad/Mac/PC (USB)
- Avid Pro Tools Duet
- Element Series
- Ensemble (Firewire)
- Ensemble (Thunderbolt)
- GiO
- Jam
- Maestro App
- Maestro 2
- MiC
- MINI Products
- One
- One (iPad, Mac, PC)
- PSX-100
- Quartet
- Rosetta 200
- Rosetta 800
- Rosetta AD
- Sennheiser ClipMic
- Symphony32 PCI Cards
- Symphony 64 PCIe & Thunderbridge
- Symphony I/O Mk 1
- Symphony Mobile
- Trak2
- X-Digi-Mix
- X-FireWire
- X-HD
- X-Symphony
- X-Video
-
First Take
What does the IMPD button do on the AP-66 model?
The IMPD stands for impedance, and the button alters the input impedance of the physical mic preamp circuit, similar to the Impedance switch found on Neve modules. When Lo-Z is on, input impedance is 300 ohms; when Lo-Z is off, impedance is 1200 ohms.
The impedance setting usually has a pretty subtle effect on the audio, but can have the most pronounced effect when lower impedance ribbon mics are connected.