Random woodpecker sounds, especially at low frequencies. A humming sound that starts at 50% of maximum volume. Update: The seller's post indicates that the problem was likely caused by low powered speakers that cannot handle the power output of the amp. As I bought this amp to drive these speakers just removed from an old TV I have returned the product and cannot confirm this. ========================Original message from seller: We spent a day testing several speakers and now we have found the problem. The problem is that your speaker is a mid-tweeter and has a square shape. Your speaker power is estimated to be around 10W~15W, and the output power of the audio amplifier board can reach 50W+50W. This leads to the following two results: 1. The output power of the audio amplifier board is much larger than the rated power of the speaker, and there is a very high possibility of damaging the speaker.2. The audio amplifier board has a bass boost control. If the bass is boosted because your speaker power is too low and it is a mid-high speaker, part of the bass frequency cannot be reflected, resulting in distorted sound quality. It's a woodpecker sound. It is recommended to replace the speaker, preferably a full-range speaker and a round shape, with a power of more than 30 watts. We hope that we can help you solve the problem. If the problem is still not solved, please let us know. We will give you a 100% satisfactory answer!
Nobsound Dual TPA3116 Digital Power Amplifier - High-Fidelity Stereo Amp With NE5532P Pre-Amp, Audiophile-Grade 2.0 Channel And 100W×2 Output (Black)
13 Review
Denon PMA-800NE Hi-Fi Stereo Integrated Amplifier, 85W x 2 Channels, Built-In Phono Pre-Amp, Analog Mode, Advanced High Current Power, Black
20 Review
AIMPIRE AD10 Mini USB DAC CSS XMOS XU208 ES9018K2M OPA2134 HIFI Audio Decoder Amplifier For Enhanced Audio Performance
20 Review
Bluetooth adapter Baseus BA01 black 1 pc.
95 Review
Sony ICFC1TBLACK Alarm Clock Radio
11 Review
JBL Horizon Bluetooth Alarm Clock Radio with Multiple Alarms, Soothing Ambient LED Light, Automatic LCD Display, and Dual USB Charging (White, AM/FM Radio)
41 Review
Experience Dynamic Audio with Panasonic SC-UX100 CD & USB Wireless Bluetooth 300W Mini Hi-Fi System Shelf Stereo
19 Review
Stream Your Favorite Tunes With AUNA KR-200 SI Internet Kitchen Radio - Spotify Support, Remote Control, And More!
15 Review