New Audio Frontiers Supreme 300 B SE Integrated Tube Amplifier
The Supreme 300B SE is built around a premise most amplifier designers would find counterintuitive: take the 300B output tube — the one that built its reputation in single-ended circuits — and run four of them in a push-pull configuration per channel. The result is 21 watts of pure class A power with the midrange character 300B is known for and a bass response and dynamic headroom that single-ended designs of any wattage cannot match.
The output transformers are wound in-house by New Audio Frontiers using a proprietary scheme and amorphous core material, silver-plated copper Litz wire, and double winding to suppress parasitic oscillation. This is the part of a tube amplifier that most manufacturers source from a catalog. NAF builds theirs from scratch, which is why the high-frequency extension on this amplifier measures to 65kHz and actually sounds like it.
Driver stage runs differential amplifiers biased with current sources. Fixed bias on the output stage for cleaner overload recovery and better dynamic peaks. Dual mono architecture, individually regulated power supplies per channel. Point-to-point wiring with Holco and Vishay resistors throughout the signal path, built to MIL specification tolerances. 45 kg of Italian engineering.
Can be run as an integrated or a pure power amplifier.
Specifications
- Output Power: 2 × 21 watts into 8Ω (THD 5%)
- Output Tubes: 4 × 300B per channel (push-pull, class A)
- Topology: Push-pull, fixed bias, dual mono
- Sensitivity / Input Impedance: 900mV / 100kΩ
- Frequency Response: 20Hz – 65kHz
- Signal-to-Noise Ratio: 80dB
- Power Consumption: 300W max
- Dimensions: 35 × 24 × 56 cm (W × H × D)
- Weight: 45 kg
Due to size and weight, this item may incur an additional shipping surcharge and is listed as Store Pick Up Only. Contact us for a quote if you wish to have it Shipped.
Phone: 888-248-3246
Email: info@echohifi.com
Inquire Now
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Return Policy
Return Policy
We offer a 3-day return window on all purchases. Returns made to a credit or debit card will incur a 5 percent processing fee. Shipping costs, both to and from, are the responsibility of the customer if applicable.
After the 3-day window and up to 3 weeks from the date of purchase, items may still be returned, subject to a 20 percent restocking fee.
For shipped orders, customers must notify us within 3 days of receiving the item to initiate a return. Once the item is received back in the same condition it was sent, we will issue a refund minus all shipping charges and a 5 percent credit card processing fee.
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The Supreme 300B SE is built around a premise most amplifier designers would find counterintuitive: take the 300B output tube — the one that built its reputation in single-ended circuits — and run four of them in a push-pull configuration per channel. The result is 21 watts of pure class A power with the midrange character 300B is known for and a bass response and dynamic headroom that single-ended designs of any wattage cannot match.
The output transformers are wound in-house by New Audio Frontiers using a proprietary scheme and amorphous core material, silver-plated copper Litz wire, and double winding to suppress parasitic oscillation. This is the part of a tube amplifier that most manufacturers source from a catalog. NAF builds theirs from scratch, which is why the high-frequency extension on this amplifier measures to 65kHz and actually sounds like it.
Driver stage runs differential amplifiers biased with current sources. Fixed bias on the output stage for cleaner overload recovery and better dynamic peaks. Dual mono architecture, individually regulated power supplies per channel. Point-to-point wiring with Holco and Vishay resistors throughout the signal path, built to MIL specification tolerances. 45 kg of Italian engineering.
Can be run as an integrated or a pure power amplifier.
Specifications
- Output Power: 2 × 21 watts into 8Ω (THD 5%)
- Output Tubes: 4 × 300B per channel (push-pull, class A)
- Topology: Push-pull, fixed bias, dual mono
- Sensitivity / Input Impedance: 900mV / 100kΩ
- Frequency Response: 20Hz – 65kHz
- Signal-to-Noise Ratio: 80dB
- Power Consumption: 300W max
- Dimensions: 35 × 24 × 56 cm (W × H × D)
- Weight: 45 kg
Due to size and weight, this item may incur an additional shipping surcharge and is listed as Store Pick Up Only. Contact us for a quote if you wish to have it Shipped.
Phone: 888-248-3246
Email: info@echohifi.com
Inquire Now
8.5/10- Great condition.