500-watt Lightweight Bass Head with Tube Preamp The LX5500 is a compact 500-watt amplifier that weighs just eight pounds and responds dynamically to any playing style. The Class A 12AX7 tube-powered preamp allows you to dial in an unlimited number of bass tones, while the lightweight Class D amp delivers 500 watts of true continuous power?enough to make any cab sing. Hartke Tone Stacked Capture the character of your bass guitar as soon as you plug it in with the Hartke Tone Stack EQ, designed specifically for rich bass tone. The preamp includes the familiar bass and treble controls, plus a Frequency and Shape knob for extensive midrange control. The Brite button can be engaged to boost high frequencies, bringing out the top end of the bass and highlighting natural harmonic overtones for a distinct, vibrant sound. Total Control The LX5500 features two essential onboard effects designed to enhance your playing and add additional options to your sonic arsenal. An integrated Drive control gives you the option of mixing in a comfortable amount of grit or maxing it out for a healthy dose of fuzzy goodness. Dial in just the right amount of compression to add punch and presence to your attack, or smooth out transients for players who use slapping, tapping, and thumb picking techniques. The Ins and Outs Lightweight enough to take anywhere and versatile enough to use in any setup, the LX5500 is the ideal amplifier for stage and rehearsal. An XLR direct output with pre and post EQ selection allows direct connection to a PA or recording console. An 1/8" headphone output is ideal for quiet practice sessions, while an 1/8" auxiliary input can be used to connect phones or MP3 players. Features 500 watts of continuous power @ 4 ohms Class D bass amplifier that weighs 8lb Classic 12AX7 Class A tube preamp circuitry Tone stack EQ with Bass, Treble, Shape and Frequency controls Brite button for top-end presence Drive circuit for added distortion effect Compressor knob controls bass dynamics 1/4_ input jack compatible with active and passive instruments 1/4" and twist-and-lock speaker jacks (compatible with Speakon? connectors) 1/4" Effects Send and Return jacks 1/8" Aux input 1/8" Headphone output 1/4" Tuner Output Balanced XLR direct output with pre/post switch Output Mute switch Specifications Continuous Average Output Power 500 watts @ 4 ohms, 330 watts @ 8 ohms Preamp Class A, with 12AX7 Low Noise High-Mu Twin Triode Input >1M? unbalanced Compressor Ratio Fixed 2:1 Compressor Threshold Off to -30dBu to Input Mute >80dB (100dB typical) at Direct Output & Speaker Output Brite Switch 10kHz, +8dB Gain @ 2 o?clock; +5dB Gain @ min Bass Knob +8/-14dB @ 80Hz relative to 12 o?clock Shape Knob +11/-3dB relative to 12 o?clock Frequency Knob 200Hz-800Hz Treble Knob +5/-20dB @ 6kHz relative to 12 o?clock FX Loop Send 200? impedance balanced FX Loop Return 20k? balanced, 5.5dBu for Rated Output Power Tuner Output 100? unbalanced Direct Output 210? balanced Stereo Aux Input 3k? unbalanced, -10dBV Headphones 80mW max @ 32? Dimensions 14? x 10.6? x 2.6? / 355mm x 270mm x 73mm Weight 8lb / 3.6kg