Evans EBP-20EMAD2SYS Emad System Pack Bass Drumheads 20"

The "EBP-20EMAD2SYS" refers to the Evans 20-inch EMAD2 Bass Drum System Pack.1 This comprehensive package includes both a batter (playing side) and a resonant (front side) bass drumhead, specifically designed to give drummers unparalleled control over their bass drum's attack, focus, and sustain.2 The EMAD (Externally Mounted Adjustable Damping) system is an industry standard, allowing for quick and easy tonal adjustments without needing to remove the drumhead.3

Here's a detailed breakdown of the components and features within this system pack:

Evans EMAD2 Batter Head (BD20EMAD2 Clear)

The heart of the playing side, the EMAD2 batter head is engineered for maximum punch, low-end, and durability:

• Two-Ply Construction for Power and Durability: This head features a unique two-ply design, consisting of an outer ply of 7mil film and an inner ply of 10mil film, totaling 17mil thickness.4 This construction provides exceptional durability, allowing it to withstand heavy hitting, while simultaneously maximizing attack and enhancing the low-end frequencies of your bass drum.5

• Externally Mounted Adjustable Damping (EMAD) System: The signature feature of the EMAD series.6 It includes two interchangeable foam damping rings (a narrower and a wider ring) that can be quickly mounted externally to the head.7 This allows drummers to easily adjust the amount of sustain and overtone control, effectively customizing the bass drum's sound in seconds without removing the head or stuffing anything inside the drum.8 The head can also be used without any rings for a more open sound.

• Clear Film: The clear film finish provides a bright, powerful attack and allows the true tonal characteristics of the drum shell to shine through.9

Evans EMAD Resonant Head (BD20REMAD Black or Clear Resonant)

The resonant head in the pack is designed to complement the batter head, providing controlled sustain and optimized projection:10

• Single-Ply Construction with Damping Ring: This resonant head is made from a single ply of 10mil film. It typically features a foam damping ring (sometimes internal, sometimes around the port) to control unwanted overtones and provide a focused resonance.11

• Offset 4-inch Microphone Port: The head includes an offset 4-inch microphone port, which is reinforced to prevent tearing.12 This port is strategically placed to allow for easy mic placement, contributing to a controlled, punchy, and articulate bass drum sound, especially in amplified settings. The foam ring around the port's edge helps further control overtones and sustain.13

• Black or Clear Finish: Depending on the specific variant of the system pack, the resonant head typically comes in a black or clear finish, offering different aesthetic options while performing its crucial sonic role.

Shared Technology: Level 360 Technology

Both the EMAD2 batter head and the EMAD resonant head in this system pack incorporate Evans' revolutionary Level 360 Technology:

• Enhanced Contact and Tuning Stability: Level 360 technology extends the drumhead's playing surface 360 degrees around the drum.14 The vertically enhanced collar design ensures even contact with the drum shell's bearing edge, creating a perfectly level fit.15 This results in easier, more precise, and stable tuning, a wider tuning range, and optimized sound quality and response across all tension points of the head.

The Evans 20-inch EMAD2 Bass Drum System Pack is a comprehensive solution for drummers looking to achieve a powerful, focused, and customizable bass drum sound with exceptional punch and low-end, all while offering unparalleled control over sustain and overtones.16 It's an industry favorite for rock, gospel, and other genres requiring a strong, defined kick drum.