Bogner Atma Head, All-Tube Amp Head for Electric Guitar, A versatile amplifier with variable power from 1 to 18 watts that doesn't affect the sound or feeel, 3 Channels: Clean, Crunch, Lead, Switchable power: 18 W, 5 W, 1 W, Unique hybrid aluminium-wooden constuction, Preamp tubes: 3 x ECC83 (12AX7), Power tubes: 2 x EL84, EZ81 tube rectifier (vintage mode), Controls: Gain, Tone, Bass, Middle, Treble, Volume, CR Gain, 3 Gain-/Voicing-/Compression preset switch covering 60's, 70's and 80's gain and tonal characteristics, Bright switch, Modern/Vintage switch, Power attenuation, Speaker output: 4, 8 and 16 ohms, Serial buffered effects loop, Dimensions: (W x D x H) 321 x 165 x 159 mm, Weight: 6.35 kg, Includes a 2-way footswitch (Overdrive / Clean & Crunch / Solo), Handmade in the USA@+*Connectors:* @+@+, Input: 6.3 mm Jack, Speaker connector: 3x 6.3 mm Jack, FX Send & Return: 2x x 6.3 mm Jack, Footswitch: 6.3 mm Jack