When you push the prepared cable into the SIS plug, the soft copper will find the hole. When you turn the plug 1 or 2 times the harder brass core of the plug will catch and cut into the copper conductor. When you feel this happen you put the cap in place and screw the SIS plug into the cap.

This action turns the soft copper deeper into the SIS core – Mashes the ground up against the SIS body to make ground contact (airtight as the copper is deformed inside pushing air from the connection). This seals the red jacket at the exit tightly so that the cable will not come loose from the plug and the cap will not come loose from the plug body. When finished the tip/core connection with the Monorail is also air-tight and in many ways better than a soldered connection. If you unscrew the SIS plug and remove the Monorail cable you can see the soft copper has been shaped to meet with the SIS core.

The Monorail is a coaxial cable that embodies many of the important design features of the Evidence Audio family of cables in a small diameter cable. This allows you to replace smaller cables that are causing distortions with a better-sounding option, where the larger and heavier cables won’t fit. Examples include on pedalboards where space is at a premium, in rack system where every ounce matters, or inside the cavity of a guitar for its wiring harness.

The Monorail is a coaxial cable that embodies many of the important design features of the Evidence Audio family of cables in a small diameter cable. This allows you to replace smaller cables that are causing distortions with a better-sounding option, where the larger and heavier cables won’t fit. Examples include on pedalboards where space is at a premium, in rack system where every ounce matters, or inside the cavity of a guitar for its wiring harness.

When you push the prepared cable into the SIS plug, the soft copper will find the hole. When you turn the plug 1 or 2 times the harder brass core of the plug will catch and cut into the copper conductor. When you feel this happen you put the cap in place and screw the SIS plug into the cap.

This action turns the soft copper deeper into the SIS core – Mashes the ground up against the SIS body to make ground contact (airtight as the copper is deformed inside pushing air from the connection). This seals the red jacket at the exit tightly so that the cable will not come loose from the plug and the cap will not come loose from the plug body. When finished the tip/core connection with the Monorail is also air-tight and in many ways better than a soldered connection. If you unscrew the SIS plug and remove the Monorail cable you can see the soft copper has been shaped to meet with the SIS core.

When you push the prepared cable into the SIS plug, the soft copper will find the hole. When you turn the plug 1 or 2 times the harder brass core of the plug will catch and cut into the copper conductor. When you feel this happen you put the cap in place and screw the SIS plug into the cap.

This action turns the soft copper deeper into the SIS core – Mashes the ground up against the SIS body to make ground contact (airtight as the copper is deformed inside pushing air from the connection). This seals the red jacket at the exit tightly so that the cable will not come loose from the plug and the cap will not come loose from the plug body. When finished the tip/core connection with the Monorail is also air-tight and in many ways better than a soldered connection. If you unscrew the SIS plug and remove the Monorail cable you can see the soft copper has been shaped to meet with the SIS core.

ESP-RA PLUG 

The ESP-RA is the first solderable 1/4″ phone connector from Evidence Audio and designed (like all of our products) with the primary purpose to sound demonstrably better than anything in its class.

What class does it fall in?  Its compact size and angled format makes it especially suitable for use with smaller cables on pedalboards specifically. Cables with an outer diameter of 4 to 5 mm, or around 0.155″.

The current flood of plugs used to solder patch cables for a guitar pedalboard typically use a steel nail or pot metal to conduct the audio signal. Ferrous. Magnetic. While these plugs are compact for pedalboards, they cut corners by using inferior metals to carry the sound. They offer greater affordability yet greatly reduced audio quality.

MATERIALS

The contact points of the ESP-RA are machined from a high-copper-content brass. Brass offers the appropriate hardness and strength required for a connector with very good conductivity to minimize distortions caused by the cable the plugs are used on.

PATENT-PENDING DESIGN

The form factor is akin to a “pancake” style plug, with a patent-pending closure system that allows for the plug to be assembled with one screw instead of two. This allows for a smaller form-factor as well as reduced assembly time.

HOUSING SIZE

Width 16 mm | Height 25 mm | Depth 8 mm

CABLE COMPATIBILITY

To give an idea of the cables appropriately sized to work with the ESP-RA plug here’s a list of some better known makes and models, which are all compatible:

Evidence Audio Blackrock, Evidence Audio Monorail, Belden 1865A, Belden 8218, Bill Lawrence BL-150, BPTA CA 0492, BPTA CA 0678 Canare GS-4,  Free the Tone CU-418, George L’s155, Mogami 2314, Sommer SC-ONYX TYNEE