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ASCOLTA

dual preamp follower

ASCOLTA is dual high fidelity input preamp with envelope follower and peak detector output for each channel. a

why

• To amplify stereo line level signals up to modular levels 100x (40dB). –

• To extract an envelope and a peak detector CV from any given signal.

• To integrate into your system two separate sources requiring dedicated gain compensation.

• To side-chain and compress using the two audio-follow CV out and an external VCA/LPG. er

with

• Laptop / phone – plug a stereo cable directly from their output and integrate that to your modular.

• Dynamic microphones – amplify two of them individually and sing with a friend.

• External synths take those weak signals and warm them up to modular levels. –

• Passive instruments sing and play the guitar while affecting them with your spaghetti monster–1.

how

Ascolta consist of two individual high quality preamp2 connected to an envelope follower and a peak detector output.

On the back of the module you can select the behaviour of its internal normalization when no cable is plugged into

I2:

S: the first input will accept stereo 3.5mm standard cables from any source and split L and R to output I1 O1

and O2 respectively. This way you can directly amplify stereo signals without the need of external splitters

and regulate the gain of each channel individually.

G: the second amplifier will double the amplification of the first totalling a gain range of 80dB - 10.000x.

Envelope and peak E P outputs are strictly related to the gain level of their corresponding amplifier and will follow

the dynamic of any input plugged.

features

• Two high quality 40dB amplifiers.

• Customizable internal normalization.

• Audio graded potentiometers.

• “Whatever” power connector a.k.a. don’t mind the polarity.

specs

• dimensions  width 4HP, depth mm 25

• current draw +12V 50ma, -12V 30ma.

Demos and build documentation at jolin.tech/ascolta

1 That’s actually how Ascolta came to be. I was in need of a small module capable of amplifying two sources simultaneously while being able to extract their dynamics to control the rest of the system.

2 Nerd stuff here: in the gain stage Ascolta uses two Texas Instruments LM4562 in a two pole inverting amplifier configuration. More info and detail about the chip can be found on its datasheet.