Features 6SN7 phase inverter tube Low-end will remain crystal clear and punchy at frequencies well past the low E string on your guitar High end will breathe with the openness and air of a studio grade preamp as these unique preamp tubes allow the full voice of your instrument to be heard This preamp, which has two operating modes (50's and 60's) gives you two distinct preamp modes with which to sculpt your tone The 60's mode is the cleaner of the two modes and will give you more clean headroom and is perfect for musical styles where a warm vintage Blackface type clean tone is needed Description Product Description Jackson Ampworks McFly Head The McFly from Jackson Ampworks is the first amplifier to be released in our new American Series line and is our take on the best sounding and most flexible Tweed Style amp ever made. For the first time ever, you can get authentic Tweed era tones as well as Blackface era tones all from the same amp! Jackson Ampworks McFly Head Features: 6SN7 preamp tube 6SN7 phase inverter tube Low-end will remain crystal clear and punchy at frequencies well past the low E string on your Guitars High end will breathe with the openness and air of a studio grade preamp as these unique preamp tubes allow the full voice of your instrument to be heard This preamp, which has two operating modes (50's and 60's) gives you two distinct preamp modes with which to sculpt your tone The 60's mode is the cleaner of the two modes and will give you more clean headroom and is perfect for musical styles where a warm vintage Blackface type clean tone is needed The 50's mode is more aggressive and has more preamp gain which gives the McFly its signature Tweed era tone! In the 50's mode you'll notice that notes sustain longer and will often take off into controlled feedback at will