Heritage Audio TT-73 Tabletop Microphone Preamplifier

The Heritage Audio TT-73 Tabletop Microphone Preamplifier is a 2-channel device designed for use with microphones. It features 80 dB of gain and includes various input and output connectors. The unit has a portable tabletop design with a handle. Specifications include input impedance ranging from 1200 Ω to 300 Ω, output impedance less than 75 Ω, maximum output greater than +26 dBm into 600 Ω, THD less than 0.025% at 1,000 Hz and less than 0.05% at 100 Hz, frequency response from 20 Hz to 20,000 Hz, maximum gain slightly greater than 80 dB, noise level less than -100 dBm, dimensions of 3.7 x 9.4 x 20 inches, and a weight of 4.9 lb.

• Channels: 2
• Connectors: 2 x 1/4" DI input jacks 2 x 1/4" DI thru jacks 2 x balanced 3-pin female gold-plated XLR microphone inputs 2 x balanced 3-pin female gold-plated XLR line inputs 2 x balanced 3-pin male gold-plated XLR outputs
• Input Impedance: Microphone HI: 1200 Ω minimum LO: 300 Ω minimum Line: 10 kΩ bridging, Carnhill transformer balanced and floating DI: Greater than 2 MΩ, unbalanced
• Output Impedance: Less than 75 Ω, Transformer balanced and floating to drive a load of 600 Ω
• Maximum Output: Greater than +26 dBm into 600 Ω