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Continuity™: Benefits Beyond Class A
Aegir is our first Continuity speaker amplifier, extending a technology we introduced with the Lyr 3 headphone amp. Technically, Continuity is a way to eliminate transconductance droop outside of the Class A bias region, and extend the benefits of Class A biasing. It also solves the NPN and PNP device mismatch problem, since it uses both NPN and PNP devices on both rails. It’s still a very hot-running amp, though, with over 10W of Class A standing bias.
A True No-Excuses Design
Like Vidar, Aegir uses an exotic current-feedback topology, as well as a 100% linear power supply (with 7 separate voltage rails and 600VA transformer) and microprocessor oversight to eliminate capacitors and DC servos in the signal path. No Class D, no switching supplies, no fans, no compromises, nothing in the signal path but music—for a three-figure price tag.
Power That Scales
Aegir provides 20W into 8 ohms, doubling to 40W into 4 ohms. Run mono, and you’ll see 80W into 8 ohms. Best of all, Continuity ensures you see Class-A-like performance at all these power outputs.
Convenient Standby Mode
On Aegir, we’ve added a front-panel button to put the amp into Standby mode. This de-biases the output stage completely and reduces standing power consumption significantly. This keeps the rest of the amp up and running, without massive heat output.
Designed and Assembled in USA
By “designed and assembled in USA" this is what we mean: the vast majority of the total production cost of Aegir—chassis, boards, transformers, assembly, etc—goes to US companies manufacturing in the US. Our chassis are made minutes from our facility. Our PCBs are done just over the hill from us, or done in NorCal. Our transformers are also made in California. You get the picture.
Stereo, 8 Ohms: 20W RMS per channel
Stereo, 4 Ohms: 40W RMS per channel
Mono, 8 ohms: 80W RMS
Frequency Response: 20Hz-20Khz, -0.1db, 3Hz-500KHz, -3dB
THD: <0.01%, 20Hz-20KHz, at 20W RMS into 8 ohms
IMD: <0.01%, CCIR, at 20W RMS into 8 ohms
SNR: >114db, A-weighted, referenced to full output
Damping Factor: >100 into 8 ohms, 20-20kHz
Gain: 12 (22dB)
Input Sensitivity: AKA Rated Output (Vrms)/Rated Gain. Or, 14.3/12. You do the math.
Input Impedance: 22k ohms SE, 44k ohms balanced
Crosstalk: >105dB, 20-20kHz
Inputs: L/R RCA jacks for stereo input, single XLR for mono input
Topology: Fully complementary, all-BJT, current feedback, no coupling capacitors or DC servos with Continuity™ constant transconductance output stage
Oversight: microprocessor-controlled monitoring and management of critical operational points, including DC offset, with standby mode and relay shut-down for overcurrent, thermal, and other faults
Power Supply: 600VA transformer with dual mono main rails, plus boosted, regulated supply to input, voltage gain and driver stages, plus separate, isolated and regulated rails for microprocessor management.
Power Consumption: 450W maximum
Size: 9” x 13” x 3.875”