Linear Systems Matched JFETs
Description
Some lines might be available for back order. Before placing a back order, please make yourself familiar with how backorders work and note that we do not ship partial orders.
Product Details .
- Guaranteed authentic Linear Systems JFETs
- Matched to ±0.1mA (tested at 10V / 22'C and sorted into 0.1mA bins). For more information see our JFET matching information page.
- NP (LSK170/LSJ74) are ideal for a stereo BA-3, F4, F5, F5T, F6 and more
- PP (LSJ74/LSJ74) are ideal for Aleph J or BA-1 gain stages
- Please direct all technical questions to the Linear Systems JFET support thread
JFET Specifications
Quantity Limits
- Limit of 2 units per customer per month due to supply constraints. We want to ensure they all end up in the hands of builders who are going to use them for making projects, not hoarded or resold.
- If you need more than 2 for a particular build, please email contact@diyaudiostore.com with details of your build. Our goal is to see the most amps actually built and shared with the community as possible.
- We provide these matched JFETs as a service to the do-it-yourself audio hobbyist community and it's important that we can always keep these parts in stock for small orders from hobbyists. Please keep this in mind when ordering large quantities. If you would like to order a large quantity, please check with us first via email to contact@diyaudiostore.com.
What's included
| Part | LSJ74 | LSK170 | Used In |
| LSJ74 ±0.1mA Matched Pair (Grade B) | 2 | AJ BA1-GS | |
| LSJ74 ±0.1mA Matched Quad (Grade B) | 4 | AJ BA1-GS | |
| LSK170 ±0.1mA Matched Pair (Grade B) | 2 | ||
| LSK170 ±0.1mA Matched Quad (Grade B) | 4 | Mezmerize | |
| LSJ74/LSK170 ±0.1mA Matched Quad (Grade B) | 2 | 2 | F4 F5 F5T V1/2/3 F6 BA3-GS |
| LSJ74/LSK170 ±0.1mA Matched Octet (Grade B) | 4 | 4 | F5T V3 Balanced |
Very high quality JFET. They were set to run class A in the F6 amplifier, run very hot but without heat sink. I nearly run all day, every day in the Summertime, they still alive. Now, for saved money, I added a small fans for them. Excellent sounding, no noise can be heard at all. Thank you very much.
Hello I have bought them to build the "Boozhound Laboratories Deluxe JFET Phono Preamp". I have just soldered them, check the DC biasing and it was everything perfect according to spec. NO troubles. Sound is great and clean. Noise is very low.
It was a good service.
Thanks.
I ordered the LSJ74/LSK170 matched octet and I am happy with how my B24 amp sounds. Despite the long delays on the stock, there was some hiccups with the delivery to South Africa but once that was sorted out it didn’t take more than 3 days until the order was in my hands. I am happy.
Perfect matched transistor with a long lead time (6 weeks)
Already in use in my F5 with very good results
http://www.phd-audio.fr/f5-mini.html
Measurement will come very soon online
I used these to build a Pass ACP+ preamp. Worked great!
Can't get them anywhere else and these work as advertised!
I recently built the M2X unit. I ordered the 170 devices but it seems I should have ordered two matched pairs of 170/174 devices. If possible can someone clarify what should be ordered to build the M2X ? It is entirely possible I missed something obvious and sorry ahead if so. Thanks for providing the difficult to source parts!
Superb, well packed and absolutely first rate.
Excellent goods and fast delivery. Thanks a lot !