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Overview
Other Details
Other Details
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Notice: The Harmonia is not a "buffer stage". It is a true DHT output stage. The Harmonia products DO NOT use a cathode follower circuit like other buffer stages on the market where you do not benefit from the full potential of the DHT tube. With the Harmonia you are hearing the full 45/2A3/300B sound.
The Harmonia Jr. is a full DHT tube output stage for source components most any tube or solid state system. Due to the nature of DHT tubes, the Harmonia Jr. can be noisy when used as a preamplifier.
The industry's one and only DHT vacuum tube output stage
Harmonia Jr.
- The Harmonia Jr. is single ended only.
- This unit is available with transformer coupled inputs/outputs.
- Balanced not available.
- Single ended inputs - 3 sets RCA
- Single ended outputs - 2 sets RCA
- Optional Remote or manual volume available
Other Details
Other Details
Other Details
- - Aluminum Chassis
- - Laser Engraved Front Panel
- - Heavy damping material applied
- Specifications
- Output impedance:
180 ohms transformer coupled - 150 ohms single ended-
- Gain: <1dB
- Tubes: 2x 45, 2A3 or 300B with adjustable heater voltage.
- 16" W x 12" D x 3.5" H with feet/without tubes
Harmonia Jr.
- Starting at: $3,595
- Mundorf Silver/Gold/Oil Capacitors - Inquire
Notice: The Harmonia is designed as a DHT Tube Output Stage. Its proper application is to be installed in front of a preamplifier or integrated amplifier.
The Harmonia can be used as a preamplifier or between preamplifier and amplifier in some systems but with a potential for noise.
Harmonia Frequently Asked Questions
To assist our customers, we have compiled the following overview addressing the most common inquiries regarding the Harmonia output stage.
Q: What is the Harmonia?
A: The Harmonia is engineered as a Directly Heated Triode (DHT) output stage designed specifically for source components.
Q: Which vacuum tubes are compatible with the Harmonia?
A: The Harmonia supports 45, 2A3, and 300B tubes. It features a user-adjustable direct current (DC) filament supply to seamlessly accommodate both 2.5V (45/1.5A and 2A3/2.5V) and 5V (300B/1.2A) filament voltages and currents.
Q: How does the Harmonia differ from standard tube buffers on the market?
A: The Harmonia is not a tube buffer stage. It utilizes a true Mu Follower circuit rather than a cathode follower, ensuring the complete, uncompromised sonic signature of the installed tube is fully realized.
Q: Is the Harmonia intended exclusively for solid-state systems?
A: No. The Harmonia is versatile and performs exceptionally across various system configurations, including all-solid-state, all-tube, or hybrid setups.
Q: Can the Harmonia be used as a standalone preamplifier?
A: We do not recommend using the Harmonia as a preamplifier, as doing so may introduce unwanted noise into the signal path. It is optimized specifically to function as a DHT output stage feeding an integrated amplifier or a dedicated preamplifier.
Q: Do you offer a balanced version of the Harmonia?
A: Yes. While the Harmonia Jr. is designed exclusively for single-ended connections, the full-size Harmonia v4.5 features fully balanced inputs and outputs to accommodate balanced systems.
Q: Are custom component upgrades available for the Harmonia?
A: Absolutely. We offer various customization and upgrade paths across most of our product lines, including premium coupling capacitors and enhanced power supplies. Please contact us directly to discuss custom build options.
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