Petrof AP136 Concert Upright

About the Petrof AP136 Concert Upright

At 136cm, the AP136 is among the tallest uprights in Petrof's range, housing bass strings and a soundboard large enough to genuinely narrow the gap between upright and small grand piano tonal character - the 'upright grand' marketing language reflects that specific design intent rather than being purely promotional. This makes it suited to institutions and serious players who need concert-capable tonal projection but lack the space or budget for a genuine grand piano.

Petrof's century-and-a-half manufacturing history in the Czech Republic informs the AP136's construction, applying the same tonal design philosophy found in the brand's grand pianos to its flagship upright offering - a genuine attempt to give buyers grand-piano-adjacent sound rather than treating the upright format as inherently limited.

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Sound character of the Petrof AP136 Concert Upright

At 136cm, the AP136 is Petrof's tallest 'concert upright', with string length and soundboard area approaching grand-piano proportions - giving it unusually deep bass resonance and sustain for an upright, voiced in Petrof's characteristically warm Central European tradition.

Technical data for the Petrof AP136 Concert Upright

The history of the Petrof AP136 Concert Upright

Petrof's AP136 concert upright is marketed as an 'upright grand,' designed to deliver tonal projection approaching a small grand piano.