DescriptionHartke HD25 8 25 Watt Bass Combo AmplifierSpecifications & FeaturesPower: 25 WSpeaker: 8″ HyDrive (hybrid cone — half paper, half aluminum)Controls: Volume, Bass, Mid, Treble (top-mounted)Inputs / Outputs:¼″ input for active and passive bass1/8″ (3.5 mm) stereo auxiliary input (for MP3 players, etc.)¼″ headphone out (which mutes the speaker)Limiter: Built-in limiter to protect the amp / speakerCabinet: Perforated metal grille, molded strap handle for portabilityTone EQ Frequencies:Bass: ~100 HzMid: ~400 HzTreble: ~10 kHzAudio Specs:Input level: 44.6 mV RMSTotal Harmonic Distortion: ~0.09%Signal-to-noise: 1 W → 60 dB, 25 W → 74 dBSignal gain: –27 dBVHeadphone Output Power: 125 mW / 32 ΩDimensions (H × W × D): ~15.2″ × 14″ × 10″ (≈ 387 mm × 355 mm × 254 mm)Weight: ~24.7 lb / 11.2 kgTone & Use‑CasesThe HyDrive speaker gives a balanced, dynamic tone: you get warmth from the paper cone punch/attack from the aluminum part.With only 25 W, this amp is best suited for practice, small rehearsal rooms, or bedroom playing, rather than loud gigging.The AUX input lets you play along with backing tracks, which is super handy for practice.Headphone out makes it great for quiet practice.
