Power amplifiers mono — Limestone PP1
Description, images, technical data and specifications
Limestone PP1
Image source — © Limestone
The output stage of the Limestone PP1 amplifier is built using a push-pull circuit with KT88 tubes. The phase splitter and driver stage use Shuguang Black Treasure CV181-Z tubes, which can be replaced with 6SN7 TAD or NOS Sylvania “Bad Boy”. Gold-plated WBT connectors are provided for connecting acoustic systems. This hand-assembled tube amplifier provides impressive audio performance, combining precision engineering with premium components.
Specifications
Model name
PP1
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
N/A
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
N/A
Output power (4Ω) (W)
45
Gain (dBu)
N/A
Sensitivity (mV)
N/A
Frequency response low +/- 3dB (Hz)
30
Frequency response high +/- 3dB (Hz)
30000
Signal to Noise Ratio (dB)
N/A
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
1
Max power consumption (W)
N/A
Damping factor
N/A
Dimensions (mm)
250 x 250) x 550
Weight (kg)
18
Official link
