O microfone sem fio está no pedestal.

O is the masculine singular definite article, meaning the.

• o microfone = the microphone
• The noun microfone is masculine in Portuguese, so it takes o, not a

This is one of the first things English speakers notice, because English uses the for all nouns, but Portuguese changes the article depending on gender and number.

In Portuguese, every noun has a grammatical gender. Microfone is masculine, so you say:

• o microfone
• um microfone

There is not always a perfect rule for guessing gender, so in many cases you simply learn the noun together with its article. A good habit is to memorize o microfone, not just microfone by itself.

Literally, sem fio means without wire.

• sem = without
• fio = wire, cord, or thread, depending on context

So microfone sem fio is literally wireless microphone or microphone without a wire.

This is a very common way Portuguese expresses wireless:

• fone sem fio = cordless phone
• internet sem fio = wireless internet

In Portuguese, descriptive expressions like this usually come after the noun.

So Portuguese says:

• microfone sem fio

where English usually says:

• wireless microphone

This is a normal word-order difference. Portuguese often puts modifiers after the noun, especially when they are longer expressions rather than single adjectives.

Está comes from estar, which is used for location and temporary states.

Here, the sentence is talking about where the microphone is located:

• O microfone sem fio está no pedestal.
• The wireless microphone is on the stand.

For location, Portuguese normally uses estar, not ser.

Compare:

• O microfone está no pedestal. = The microphone is on the stand.
• É um microfone novo. = It is a new microphone.

So:

• estar = location, condition, temporary state
• ser = identity, classification, essential characteristic

This is an important distinction.

• está with an accent is a verb form of estar: is
• esta without an accent usually means this for a feminine noun

Examples:

• O microfone está no pedestal. = The microphone is on the stand.
• Esta mesa é grande. = This table is big.

The accent in está matters.

Because Portuguese normally contracts em + o into no.

• em = in, on, at
• o = the
• em + o = no

So:

• no pedestal = on the stand / in the stand depending on context

Other common contractions:

• em + a = na
• em + os = nos
• em + as = nas

Examples:

• na mesa = on the table
• nos livros = in the books

Yes. Em is broader than English in.

Depending on context, em can mean:

• in
• on
• at

So no pedestal can be translated as on the stand here, even though the Portuguese uses em.

This is very common. Portuguese often uses one preposition where English uses several different ones.

Pedestal usually means stand, base, or pedestal, depending on context.

In this sentence, because we are talking about a microphone, pedestal most likely means a microphone stand.

So although the word looks like English pedestal, the best natural translation in context is often stand.

Because sem is commonly followed directly by a noun when expressing lack or absence.

So:

• sem fio = without wire
• sem açúcar = without sugar
• sem problema = without problem / no problem
• sem dinheiro = without money

You would not normally say sem o fio here, because that would mean without the wire, referring to a specific wire.

A natural Brazilian Portuguese pronunciation is approximately:

O microfone sem fio está no pedestal.

Roughly: oo mee-kroh-FOH-nee seng FEE-oh es-TAH noo peh-deh-STAW

A few notes:

• microfone stress is on fo
• está stress is on the last syllable: tá
• fio is usually pronounced as two syllable-like parts: fi-o
• In many Brazilian accents, the m in sem nasalizes the vowel, so it sounds more like sẽ

You can, but it may sound different.

• no pedestal is the most natural everyday way to say the microphone is on the stand
• sobre o pedestal more explicitly means on top of or over the pedestal

In many contexts involving location, especially with objects resting on or attached to something, Brazilians often prefer em/no/na rather than sobre.

So está no pedestal is the most natural choice here.

The normal order is:

O microfone sem fio está no pedestal.

This is the most neutral and natural order:

• subject: O microfone sem fio
• verb: está
• location: no pedestal

You could change the order for emphasis, for example:

• No pedestal está o microfone sem fio.

But that is less neutral and more marked. For everyday speech, stick with the original order.