At Interstellar Guitars, the Subway TT-800 is our warp-drive answer for bassists seeking star-forged tone. Born from the legendary Bass 400+—the tube titan trusted by icons across galaxies—and fused with the modern precision of the award-winning Subway Series, the TT-800 is a dual-channel powerhouse built for deep-space punch and nebula-soft warmth.

Choose between Boogie Tube Bloom or Subway FET-driven clarity, or pilot both using its dual-mono architecture and 800 watts of hyper-efficient Class D thrust. Whether you crave vintage tube glow or modern, laser-etched articulation, each channel is a planet of its own—ready for fast switching, dual-instrument setups, and independent effects routing.

With cosmic tools like DEEP and BRIGHT switches, global gain modes, and the new OD Symmetry control for shaping harmonic constellations, the TT-800 delivers limitless tonal universes in a portable, mission-ready chassis.

Format: Head
Mode Voicings Styles: Low and High Gain Input and Deep and Bright Tone Contour
Channel Controls: Global: Deep Switch, Bright Switch Channel One – Boogie Channel features: Variable High-Pass Filter (25Hz – 125Hz) and Active Driven Passive 3-Band EQ (Bass, Mid with variable Mid-Shift Control, Treble) Channel Two – Subway Channel features: Variable High-Pass Filter (25Hz – 125Hz) and Fully Active 3-Band EQ (+/- 12dB of Bass, Mid & Treble) with Sweepable (variable) Mid Frequency Control (150Hz-2000Hz)
Amp Type: Tube Preamp & Class D Power Amp
Graphic EQ & Contour: Variable High-Pass Filter (25Hz – 125Hz), Fully Active 5-Band EQ (+/- 12dB) featuring Bass, Treble and a selectable/bypassable 3-Band Semi-Parametric EQ Sweepable from 80Hz-1KHz, 150Hz-2.5KHz & 300Hz-5KHz respectively, and a Passive Mid Control
Foot Switchable Functions: External Switching Jack for Channel Select & Tune/Mute (Footswitch Sold Separately)
Extra Features: USB Power Outlet, Headphone Output and Auxiliary Input, Optional Two Space Rackmount Kit Available (sold separately)
Power Amp Details: Light-Weight, Compact Class D Power Amp with Variable O/D Symmetry Control, Protection, Limit LED Indicators
Preamp Tubes: 3 x 12AT7
Headphone Output: Headphone Output and Auxiliary Input
Fan Cooled: Low Noise Fan Cooled
Effects Loop: Fully Buffered Series FX Loop
Tuner Output: Tuner Output (back panel) with Play/Mute Switch (front panel) and External Mute Switching Jack (back panel) - See Footswitch in the Accessories Section for additional options
Wattage: 800 Watts @ 4 or 2 Ohms / 400 Watts @ 8 Ohms 
External Switching: External Switching Jack for Channel Select & Tune/Mute (Footswitch Sold Separately)
Speaker Outputs: Two Speakon Output Jacks (no 1/4) - 8, 4, or 2 Ohms
Cabinet Simulation Direct Live Recording Output: Balanced XLR Out with Pre/Post, Line/Mic, & Ground Lift Switches
Chassis Material: Aluminum
Cabinet Material: Black Powder Coated Metal
Dimensions: 4" H X 12" W X 11.375" D
Weight: 7 Lbs 3 oz
Accessories: Gig Bag with Shoulder Strap