ART27A vs ART108A
The ART108A's power @ 8ω is 160W against the ART27A's 36W and its power @ 4ω 160W against 36W. Both share thd (1.500%) and output impedance (100000Ω).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersTube Amplifiers
Estimated price (community-sourced)
$13,999 - $22,000
Around — community and catalog average, updates slowly
About the ART27A
The Conrad-Johnson ART27A is a limited-production, reference-grade stereo tube power amplifier designed for applications where moderate output power is sufficient. It uses a pure Class A, triode-connected KT88 output stage, with one matched pair of KT88 tubes per channel, delivering 36 watts per channel. The amplifier features separately regulated power supplies for the output stages and additional regulated supplies for the input and phase-inverter circuitry. Its circuit is phase-correct and intended for use with efficient loudspeakers. Available documentation identifies the ART27A as a special, limited model, with production originally limited to no more than 250 units. The manufacturer’s current website still provides product information and support documentation, but the available sources do not clearly state whether new units remain in regular production.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 36W @ 8Ω
- Power @ 4Ω
- 36W @ 4Ω
- Amplifier Class
- A
- Input Sensitivity
- 0.6V RMS
- Input Impedance
- 100000Ω
Analog Output
Analog signal output specifications
- THD
- 1.500%
- Output Voltage
- 0.6V RMS
- Output Impedance
- 100000Ω
Connectivity
Input and output connections
- Digital Inputs
- RCA
- Analog Inputs
- RCA
- Analog Outputs
- multi-way loudspeaker binding posts
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 482.6 × 226.2 × 444.5 mm (W × H × D)
- Weight
- 28.576 kg (63 lbs)
Key Specifications
Power: 36W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions