Description
Injectr’s high-impedance instrument input, INST IN, feeds straight into a variable gain circuit which can produce a range of tonal responses, from clean to heavily overdriven. The smooth character of the DRIVE parameter is made possible by a soft-clipping topology using a classic 4558 op amp and four diodes, two silicon and two germanium.
A post-drive LEVEL control is provided to trim the output of the preamp stage, which is accompanied by a RED LED, indicating that the signal is reaching the typical eurorack audio level of 10 Vpp. Because stringed instruments tend to have strong transients, it is suggested to adjust the LEVEL control so that the LED is illuminated with moderate to heavy playing.
One of Injectr’s most useful features is the Amp Simulator circuit. Using a complex arrangement of analog filters, it imparts an amplifier-like quality to the signal.
The CHARACTER parameter alone can dramatically alter the sound, giving the user combined control over the middle “dip” frequency and bandwidth. The PRESENCE parameter adjusts the low-end response, thickening or thinning the overall tone, whereas the BRIGHT switch enhances high frequencies. In combination with pickup selection and tone controls of the guitar itself, these parameters provide a wide range of tones all while staying within the eurorack system. If preferred, the Amp Simulator can also be toggled off by disengaging the SIM ON switch.
The module is equipped with a eurorack-level effects loop, FX SND and FX RTN, serving as an access point to process the signal after the Preamp/Drive circuit but before the Amp Simulator. It is also useful to process the signal with eurorack modules before taking the signal back out using the Line Out.
High-gain modules such as overdrive/distortion and intense compression may cause unwanted feedback in the FX Loop, and so are best patched after Injectr from the OUT jack.
- Free shipping
- 11HP
- 27mm Depth
- 38mA @ +12V, 30mA @ -12V
Parkway Music is an Authorized Dealer. Our shipments are always insured and packaged securely and professionally. All of our gear is fully inspected to meet our high-quality standards and checked over by in-house techs prior to shipping. Please feel free to reach out to us for more information!

Shipping policy
At Parkway, we pride ourselves in our extreme attention to detail in our final inspection process prior to shipping you your gear.
Our professional techs and shipping department ensure that your instrument and/or gear will arrive to you in the expected condition and playing exceptionally, right out of the box. We guarantee it.
Brand New Gear
We offer FREE domestic shipping on most of our brand new instruments and gear within the Continental US. Please note that in the event of a return on items with free shipping, the original shipping cost, in addition to the return shipping cost, will be deducted from your refund. In the event of a defective or damaged product, we are happy to cover all shipping costs incurred.
Used & Vintage Gear
We offer flat rate shipping options for all of our used & vintage gear. Our goal here is to simply cover the cost of getting the item to you and we appreciate your understanding.
Local Pickup Only
Although you have the option for local pickup on all of our products, there are some items that we must mark as 'Local Pickup' only. These items include products that are just too large, or certain vintage gear that we deem to be too fragile.
International Shipping
We are happy to offer shipping options on our used & vintage gear for almost anywhere in the world. Please review our rates for your location upon checkout.
Questions?
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