Acoustic preamp list

[Cuki79]

I added a link for the manuals

link to those preamps manuals

[jamison162]

On the two channel preamps, you may want to clarify the phantom power voltage specs on some units. I.e. the Pigtronics states "yes" but actually supplies 48v which would blow up the K&K mic, for example. Same with the new Radial PZ-Pro. Folks should be aware and understand this.

[euraquilo]

I've been maintaining a list of input impedance values for the preamps I've tried. I've boldened the impedance values I have that differ from yours.

NUX Optima Air: 10 MΩ <- I don't know where I obtained this value, so I can't be absolutely sure its correct.
LR Baggs Para Acoustic DI: 10MΩ
BBE Acoustimax: 2.2 MΩ
Fishman Model G: 10 MΩ
Behringer ADI21: 1 MΩ
Audio Sprockets ToneDexter: "1 MΩ if using a standard mono plug, 10MΩ if using a TRS plug with RING unconnected"
Fishman Acoustic Blender:

• Transducer: 10 MΩ
• Microphone w/out Phantom Power: 1 MΩ
• Microphone with Phantom Power: 2.2 KΩ

Ultrasound DI Max:

• CH-1 ¼”: 1 MΩ
• CH-1 XLR: 1K
• CH-2 ¼”: 1 MΩ

[rockabilly69]

Originally Posted by Cuki79

You're welcome. The same questions about preamps come up all the time. I thought there was a need for this kind of thread.

You could add the JHS Colour Box V2 to the list, that's what I'm currently using. Here's the manual for if you need the specs and features(the High pass starts at 60hz not 160hz that was misprinted on some pages)

[phcorrigan]

Nice work. Thanks.

I forgot what the term is, but this should be a persistent thread, posted permanently at the top of the page.

[Cuki79]

Originally Posted by jamison162

On the two channel preamps, you may want to clarify the phantom power voltage specs on some units. I.e. the Pigtronics states "yes" but actually supplies 48v which would blow up the K&K mic, for example. Same with the new Radial PZ-Pro. Folks should be aware and understand this.

done. One I could not find the value for the fire-eye unit

[Cuki79]

Originally Posted by euraquilo

I've been maintaining a list of input impedance values for the preamps I've tried. I've boldened the impedance values I have that differ from yours.

NUX Optima Air: 10 MΩ <- I don't know where I obtained this value, so I can't be absolutely sure its correct.

I took the values from manuals.

The Nux Optima Air is a Nux verdugo pedal (same plateform), my Nux IR pedal has 1 Mohms impedance.

I measured it.

[Cuki79]

Originally Posted by rockabilly69

You could add the JHS Colour Box V2 to the list, that's what I'm currently using. Here's the manual for if you need the specs and features(the High pass starts at 60hz not 160hz that was misprinted on some pages)

Coulour Box V2 added. I don't have room on the table to put HPF frequency range.

[martingitdave]

LR Baggs gig pro is 10M input. https://static1.squarespace.com/stat...user-guide.pdf

Zoom A1 is 470k input. https://zoomcorp.com/en/jp/multi-eff...FOUR-A1X-FOUR/

[Cuki79]

Originally Posted by martingitdave

LR Baggs gig pro is 10M input. https://static1.squarespace.com/stat...user-guide.pdf

Zoom A1 is 470k input. https://zoomcorp.com/en/jp/multi-eff...FOUR-A1X-FOUR/

Thanks Dave, the Baggs has been corrected. The Zoom A1.4 was already right...

[sdelsolray]

Missing from the single channel list:

Pendulum Audio HZ-10SE
Link to manual:
https://static1.squarespace.com/stat...anual+copy.pdf

Missing from the dual channel list:

Pendulum Audio SPS-1
Link to manual:
https://static1.squarespace.com/stat...S-1+Manual.pdf

Rane AP13
Link to manual:
https://www.ranecommercial.com/legac...ld/ap13man.pdf

[Chriscom]

Originally Posted by phcorrigan

Nice work. Thanks.

I forgot what the term is, but this should be a persistent thread, posted permanently at the top of the page.

On many boards that's called a sticky. I am not sure but I don't think we have 'em.

[phcorrigan]

Originally Posted by Chriscom

On many boards that's called a sticky. I am not sure but I don't think we have 'em.

There is one on the Recording sub-forum.

[euraquilo]

Originally Posted by Cuki79

I took the values from manuals.

The Nux Optima Air is a Nux verdugo pedal (same plateform), my Nux IR pedal has 1 Mohms impedance.

I measured it.

I'm glad to hear that about the Optima Air. I couldn't find input impedance at all in the manual I have.

[steelvibe]

What a cool resource Cuki! Thanks for taking the time to do all this research and post here. It should be a sticky!