The Yamaha PSS 570 is highlighted as an alternative with a filter, though not analog, offering an enjoyable experience similar to the MT-400V.

MT-100 is noted for providing a similar experience to the MT-400V at a lower cost, despite the MT-400V's pricier adjustable filter feature.

Casio SK-1/Concertmate 500 and MT-40/41/45/65 are suggested as fun alternatives in the same price range, offering varied sound experiences.

The MT-400V's adjustable filter is considered weak, with comparisons suggesting it lacks the depth of more advanced filters like the MS20.

This model is noted for being one of the few Casios that allow for some level of sound tweaking beyond preset options, enhancing user creativity.

Sliders on the MT-400V may not respond due to mechanical disconnections or cracked joints, often requiring continuity checks and potential reflow of solder joints.

Owners appreciate the MT-400V for its impressive organ sounds, which are often highlighted as a standout feature.

The MT-400V is valued for its unique analog filter section, though malfunctioning parts might require significant troubleshooting and repairs to restore full functionality.

The MT-400V often requires cleaning of sliders and trim pots using products like Deoxit for improved functionality, especially if stored in dusty conditions.

Owners recommend using contact cleaners and non-lint wipes for PCB cleaning to avoid fiber residue, especially in older models with dust and spider webs.

The keyboard's internal components are well-built, but the outer casing is less durable, leading to potential cosmetic wear over time.

Some owners suggest replacing sliders with new ones if cleaning doesn't resolve issues, as old solder can make dismounting challenging but not impossible.