How to turn an observable of an array into an array of observables (RxJS)

Seems people only ever have trouble turning an array of observables into an observable of an array – not the other way round.

So, given an observable

 Observable<Result[]>

how do I go from

Observable<Result[]> to Observable<Result>[] ?

The problem stems from the fact that I got an observable of items

items$: Observable<Item[]>

with

Item: {
   value: number,
   ...
};

where value can take discrete values, say

values = [1, 2, 3]

I need to create an observable for each value, as each feeds a different component.

So I went ahead and did the following mapping

items$.map(items => values.map(value => 
   ({ value, items: items.filter(item => item.value === value) }))

which yields an

 Observable<{ value: number, items: Item[] }[]>

However, in order to assign each value to its component I need

 Observable<{ value: number, items: Item[] }>[]

How do I get there?

values.map(value =>
  items$.map(items => 
    ({ value, items: items.filter(item => item.value === value) })
  )
)