The Limestone PP1 beautifully blends classic craftsmanship with modern design. Made from 1.5mm stainless steel, its chassis offers both durability and a sleek, polished finish, echoing the timeless elegance of vintage amplifiers. Plus, the Kerrock decorative trims add a sophisticated touch while ensuring long-lasting performance. Elevate your audio experience with style!
The output stage features a push-pull design with KT88 tubes. The phase splitter and driver stage use Shuguang Black Treasure CV181-Z tubes, which can be easily swapped with 6SN7 TAD or NOS Sylvania “Bad Boy” upon request.
Technical specifications
This hand-built tube amplifier delivers exceptional audio performance, combining precision engineering with premium components. Below are the key technical specifications that ensure high-fidelity sound, reliability, and versatility in various audio setups.
Power output
45W per channel
Frequency response
30 Hz – 30 kHz (-3dB)
Total Harmonic Distortion (THD)
Less than 1% at 1kHz
Input sensitivity
0.7V RMS for full 45W output
Output Impedance
4Ω and 8Ω via WBT gold-plated connectors
Noise/Signal Ratio
Approximately 85 dB (noise around 1mV)
Dimensions
25cm (W) x 25cm (H) x 55cm (D)
Weight
18 kg