Discrete Line Driver | Class A No-Feedback Transformer Driver
- Inspired by Vintage Console Design from 60’s
- Class A Discrete Driver
- No-Feedback Loop Circuitry
- Custom Made HRK Audio Transformer
- Selected NOS Silicon and Germanium Transistors
- LF Resonant Circuit for Extra Harmonics
- Feedback Loop Option for Cleaner Sound
- Compatible with DIYRE Colour Format
The Discrete Line Driver is the Class A, No-Feedback Loop Transformer Driver Colour Module. The design was inspired by the circuitry from Vintage Console from 60’s.
The Discrete Line Driver is made with Vintage NOS Silicon and Germanium transistors. The main driver circuit is build with three transistors creating a compact circuit with no Feedback Loop!
This special circuit is completely stable in the AC and DC domain. The Driver Circuit is DC coupled with the output transformer.
As a result, the Discrete Line Driver produces plenty of harmonics and provides better saturation of the output transformer.
The FEEDBACK jumper reduces the amount of harmonics and makes the sound cleaner.
The fourth Germanium Transistor in the input stage has the LF resonant circuit. If the LBOOST jumper is shorted, the module produces a low-frequency bump, saturating the output transformer in the LF’s.
The Discrete Line Driver Colour Module produces thick and full sound, just like the line drivers in the Vintage Mixing Consoles.
HD Audio Samples
Stranger Synth - Dry
Stranger Synth - Discrete Line Driver | Less Drive
Stranger Synth - Discrete Line Driver | More Drive
Stranger Synth - Discrete Line Driver + DOPA520 | More Drive
Stranger Synth - Discrete Line Driver with LBOOST | More Drive
Juno Synth - Dry
Juno Synth - Discrete Line Driver | More Drive
Juno Synth - Discrete Line Driver with LBOOST | More Drive
Drums - Dry
Drums - Discrete Line Driver | More Drive
Drums - Discrete Line Driver + DOPA520 | More Drive
Drums - Discrete Line Driver with LBOOST + DOPA520 | More Drive
Guitar - Dry
Guitar - Discrete Line Driver | More Drive
Guitar - Discrete Line Driver with LBOOST | More Drive
Brand New, Assembled and Tested.
Every single HRK product is carefully tested with Audio Precision test equipment before the shipping to ensure hassle-free operation.
Payment & Shipping
Shipping All Items are dispatched from the European Union within 1-3 working days. We offer fast worldwide UPS shipping with tracking. FREE delivery is available for orders over the 249USD to EU, USA and Canada. FREE delivery is available for orders over the 299USD to Australia, New Zeland, Japan and other destinations. Please check the shipping cost during the checkout. Delivery to other WorldWide destinations – 24.99USD EU Business Customers All prices exclude the VAT Tax. If you have the EU VAT number you can purchase the products available in the Bart HRK Shop with no VAT Tax. Please enter your EU VAT Number at the checkout and the VAT will be deducted from the Total Payment. Non-EU Customers Customers from outside the EU can purchase the items with no VAT. Please select the destination country and the VAT will be removed automatically. If the VAT is not removed, please email customer service via the contact form and custom invoice will be issued. Orders from the USA below 800USD are customs tax-free. Payment Options: You can pay for your order with any Credit Card
Input impedance: 10kOhm
Output impedance: 100R
Phase inverse: none
All HRK Colour Modules are fully compatible with DIYRE Colour Format
All HRK Colour Processor and Preamps fully compatible with DIYRE Colour Format
All HRK 500 products are fully compatible with API 500 Format