Marble Harpmaster

The Marble Harpmaster is our top of the line Harp amp. It is tuned for true harp power and fat blues tone with no compromise.

At first, the Harpmaster was based on the 1959 Fender Tweed Bassman circuitry with several modifications added. Later we redesigned our Harpmaster to be dedicated for harmonica or bluesharp amplification only. The circuitry in the different stages of the amp is tuned to the specific frequency characteristics of harp with several classic microphone combinations. This amp features the improved normal channel for reduced harshness and feedback at high volumes and a bright channel for more open playing.

The harpmaster combines excellent tonal response and low microphonic feedback even at higher volumes. To meet todays' demands of playing, the power and low-end of the Harpmaster are significantly increased compared to the Roadking. To handle the increased power no less than six special design 8" Marble Bluetone speakers are used in a Roadking sized pine cabinet. The Harpmaster is available both in tweed and in several tolex covers.

Our Harpwood and Harpmaster amplifiers are developed in close support with our friend and great performer Ben Bouman 'the Dutch Harpmaster'. Currently Ben teaches harmonica and bluesharp playing throughout The Netherlands, Germany and Belgium. His harp technique workshops are very popular. He drops by in our shop on a regular basis to give our harp amps a check up before shipping out. We want to thank Ben for his enthousiasm and very useful feedback and we are very happy that he stays so closely committed to our shared goal: the quest for blues tone.

• Power section 2 x 6550 tubes, 50 Watts RMS
• tube rectifier 5U4GB
• Pre amp tubes 12AT7, 12AX7, 12AY7, 12AU7
• Controls: Hi/Lo inputs, Volume (Ch 1), Volume (Ch 2), Treble, Middle, Bass, Presence (treble filter that operates on both channels).
• 6 special design 8 " Marble Blue-tone speakers 25W each
• Dimensions 61 x 59 x 27, weight 24 kg