Echo-Sound

The Echo-Sound by Schaller is a vintage delay unit that was manufactured in 1963. It features a unique design with technical specifications as follows:

- Number of Tubes: 7 (ECC83 ECC83 ECC83 ECC83 EM84 ECC83 EL84)
- Main principle: Audio-Amplification
- Power type and voltage: Alternating Current supply (AC) / 110-240 Volt
- Material: Metal case
- Shape: Tablemodel, with any shape - general
- Dimensions (WHD): 370 x 135 x 200 mm / 14.6 x 5.3 x 7.9 inches
- Weight: 6.9 kg / 15 lb 3.2 oz (15.198 lb)
- Recording Method: The sound is recorded on a rotating aluminum drum coated with Fe2O3. Around this drum, there is an erasing head, a recording head, and 3 playback heads that must not touch the drum.

The Echo-Sound operates on alternating current and is designed for audio amplification. It utilizes a unique recording method involving a rotating aluminum drum and multiple heads for recording and playback. This vintage unit is part of the collections of various enthusiasts and is a valuable piece of audio recording history.