Limestone PP1 – a power amplifier from Croatia
18.11.2022 08:00 | ~1 minute read
The Croatian company Limestone has introduced the Limestone PP1 mono power amplifier, which uses KT88 tubes. The model is housed in an “armor-piercing” case made of 1.5 mm stainless steel. Kerrock decorative panels add exquisite touches and allow the devices to fit into any interior.
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
This product is in the Hi-Fi and High End Electronics and Acoustics database
Power amplifiers mono — Limestone PP1
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
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
Image source - https://limestone.hr
More content
Echo Diastasis PH 79 Reference – a Phonostage With a Special Circuit Design
The Greek company Echo Diastasis has released a new phono preamplifier Echo Diastasis PH 79 Reference – based on original circuit design solutions, the development of which lasted for many years. The device does not have global feedback and is implemented in the “dual mono” scheme.
Vertere Acoustics DG-X – All-in-One Turntable
The English company Vertere Acoustics has introduced a new model of the DG-X vinyl record player, which is supplied from the factory in several configuration options – including even a tonearm and cartridge.
T+A Symphonia – Integrated Amplifier with Arrows Indicators
German company T+A has introduced a stylish integrated amplifier T+A Symphonia with arrows indicators of the gain level. The model offers a full set of analog and digital inputs, is equipped with a built-in digital-to-analog converter, a full-fledged network streamer and has a built-in phono preamplifier.
Dayens Ecstasy IV Slim – an Amplifier for Purists
Serbian company Dayens has released an ascetic stereo power amplifier Dayens Ecstasy IV Slim – the model uses output stages on two pairs of Japanese transistors and provides (despite the compact slim case) 110 W per channel when working on loudspeakers with an impedance of 8 Ohms (2 x 160 W at 4 Ohms).
Cayin MT-35 MK3 – New Tube Integrated Amplifier
Cayin has released an update to its well-known integrated amplifier model – the Cayin MT-35 MK3. In addition to three RCA inputs, the amp received a wireless streaming module Bluetooth (AAC, aptX HD and LDAC) with a fairly powerful built-in digital-to-analog converter based on the ES9018K2M Sabre32 chip.
